Mandy Moore Talks Mosquito Nets – ABC News

December 13, 2010

Don’t ask me what work she’s done, because I couldn’t tell you.  I can tell — based on the headlines of the clipping services — that Mandy Moore is popular.

Ironically, in her brief tour of Africa and — shall we label it? — probably-shallow understanding of the issues, Ms. Moore has a deeper understanding of malaria and how to fight it than the most erudite of the DDT denialists, like Michael Crichton, or Rutledge Taylor.  Innocence wins.

For ABC News, the actress talked about charity work in Africa:

Vodpod videos no longer available.

Mandy Moore Talks Mosquito Nets – ABC News, posted with vodpod

It’s a case of a celebrity doing “Do a Good Deed” duty, most likely.  In the video, Mandy Moore puts DDT denialists to shame.  In writing?  Moore doesn’t come off as well.  (Did she write that piece herself?  Maybe she should write what she talks.)


Truth in a fair fight: Eli Rabett explains Gates Foundation’s good work against malaria

September 21, 2010

Good works are oft’ interred with the bones of the good workers, according to that Brutus Mark Antony guy — and at Watts Up With That, many work to bury any good workers, too.

So, a specially-scrubbed carrot is due Eli Rabett, who details the good works of the Gates Foundation against malaria, just to counteract the clamor of the howling at WUWT.

. . . since this started with an attack on Bill Gates, it is important to understand at least some of the interesting things that the Gates Foundation is doing to help fight malaria.

Among these, Affordable Medicines for Malaria (AMFM), is one of the cleverest, and may even work. The idea is that AMFM will buy ACT (artemisinin combination therapy – something else the Wattoids didn’t know about) drugs directly from the manufacturers in huge amounts at deep discount, and pass the drugs on to the distributors, public health agencies, private wholesale pharmacies, and NGOs at so far below cost that even counterfeit drugs cost more. The private wholesalers can take their profit.

One may hope someone will find the magic bullet to fight malaria.  There’s the Ghost of Santayana pacing the chalkboard again, however:  Our experience shows that magic is not real, no magic bullet has ever existed against malaria, and DDT is not now the magic bullet it never was in the first place.  “Those who cannot remember the past are condemned to repeat it,” Ghost of Santayana mutters.

A special place in hell is reserved for those who remember the past, but tell false tales about it instead.


DDT and birth defects: South African television asks questions

July 23, 2010

Steven Milloy, Roger Bate, and Richard Tren hope you never see this television production — they hope you never even hear about it.  It’s one more indication that Rachel Carson was right.

They hope you never even hear about it.  It’s set for telecast in South Africa next Tuesday:

Special Assignment to broadcast episode on ‘Collateral Damage’

Published: 22 July 2010

This week, Special Assignment looks at those affected by the dangerous DDT chemical and also those who say it is a necessary evil to prevent many South Africans from dying.

“I have problems with my balls,” says ‘George’. “I was born without testicles,” adds ‘Joseph’, yet another man born in the Limpopo area. These two and many other young men in Venda share a common story.

Each year, South Africa sprays more than 90 tonnes of the toxic DDT chemical in homesteads in KwaZulu-Natal and Limpopo areas. Though DDT, a persistent organic chemical which can remain in the environment for as much as 40 years is banned across the world, South Africa still uses it to control malaria in the country. Recent studies have however showed that DDT is harmful to humans with hundreds of kids born in the Venda area showing signs of genital deformities. The chemical has also been associated with breast cancer; diabetes; and spontaneous abortion. Yet it remains South Africa’s best option for the prevention of malaria which kills millions of people each year across Africa. This week, Special Assignment looks at those affected by this chemical and also those who say it is a necessary evil to prevent many other South Africans from dying.

‘Collateral Damage’ will be broadcast on Special Assignment on Tuesday, 27 July, at 20:31 on SABC3.


University of Arizona’s “malaria-proof” mosquito

July 15, 2010

This could be good news:  A genetically-altered mosquito that doesn’t harbor the malaria parasite, and so cannot pass it along to humans it bites in its later life.

One more way to end the use and production of DDT.

Press release from the University of Arizona (one of my alma mater schools):

The first malaria-proof mosquito

Scientists at the University of Arizona have achieved a breakthrough in the fight against malaria: a mosquito that can no longer give the disease to humans

IMAGE: Michael Riehle, holding genetically altered mosquitoes, and his team work in a highly secure lab environment to prevent genetically altered mosquitoes from escaping.

Click here for more information.

For years, researchers worldwide have attempted to create genetically altered mosquitoes that cannot infect humans with malaria. Those efforts fell short because the mosquitoes still were capable of transmitting the disease-causing pathogen, only in lower numbers.

Now for the first time, University of Arizona entomologists have succeeded in genetically altering mosquitoes in a way that renders them completely immune to the parasite, a single-celled organism called Plasmodium. Someday researchers hope to replace wild mosquitoes with lab-bred populations unable to act as vectors, i.e. transmit the malaria-causing parasite.

“If you want to effectively stop the spreading of the malaria parasite, you need mosquitoes that are no less than 100 percent resistant to it. If a single parasite slips through and infects a human, the whole approach will be doomed to fail,” said Michael Riehle, who led the research effort, the results of which will be published July 15 in the journal Public Library of Science Pathogens. Riehle is a professor of entomology in the UA’s College of Agriculture and Life Sciences and is a member of the BIO5 Institute.

Riehle’s team used molecular biology techniques to design a piece of genetic information capable of inserting itself into a mosquito’s genome. This construct was then injected into the eggs of the mosquitoes. The emerging generation carries the altered genetic information and passes it on to future generations. For their experiments, the scientists used Anopheles stephensi, a mosquito species that is an important malaria vector throughout the Indian subcontinent.

The researchers targeted one of the many biochemical pathways inside the mosquito’s cells. Specifically, they engineered a piece of genetic code acting as a molecular switch in the complex control of metabolic functions inside the cell. The genetic construct acts like a switch that is always set to “on,” leading to the permanent activity of a signaling enzyme called Akt. Akt functions as a messenger molecule in several metabolic functions, including larval development, immune response and lifespan.

When Riehle and his co-workers studied the genetically modified mosquitoes after feeding them malaria-infested blood, they noticed that the Plasmodium parasites did not infect a single study animal.

IMAGE: Under UV light, this mosquito larva reveals a red fluorescent marker in its nervous system, causing eyes and nerves to glow. The marker’s presence tells the researchers in Riehle’s…

Click here for more information.

“We were surprised how well this works,” said Riehle. “We were just hoping to see some effect on the mosquitoes’ growth rate, lifespan or their susceptibility to the parasite, but it was great to see that our construct blocked the infection process completely.”

Of the estimated 250 million people who contract malaria each year, 1 million – mostly children – do not survive. Ninety percent of the number of fatalities, which Riehle suspects to be underreported, occur in Sub-Saharan Africa.

Each new malaria case starts with a bite from a vector – a mosquito belonging to the genus Anopheles. About 25 species of Anopheles are significant vectors of the disease.

Only the female Anopheles mosquitoes feed on blood, which they need to produce eggs. When they bite an infected human or animal, they ingest the malaria parasite.

Once the Plasmodium cells find themselves in the insect’s midgut, they spring into action. They leave the insect’s digestive tract by squeezing through the midgut lining. The vast majority of Plasmodium cells do not survive this journey and are eliminated by the mosquito’s immune cells. A tiny fraction of parasite cells, usually not more than a handful, make it and attach themselves on the outside of the midgut wall where they develop into brooding cells called oocysts.

Within 10-12 days, thousands of new Plasmodium cells, so-called sporozoites, sprout inside the oocyst. After hatching from the oocyst, the sporozoites make their way into the insect’s salivary glands where they lie in wait until the mosquito finds a victim for a blood meal. When the mosquito bites, some sporozoites are flushed into the victim’s bloodstream.

“The average mosquito transmits about 40 sporozoites when it bites,” said Riehle, “but it takes only one to infect a human and make a new malaria victim.”

Several species of Plasmodium exist in different parts of the world, all of which are microscopically small single-celled organisms that live in their hosts’ red blood cells. Each time the parasites undergo a round of multiplication, their host cells burst and release the progeny into the bloodstream, causing the painful bouts of fever that malaria is known and feared for.

Malaria killed more soldiers in the Civil War than the fighting, according to Riehle. In fact, malaria was prevalent in most parts of the U.S. until the late 1940s and early 1950, when DDT spraying campaigns wiped the vectors off the map. Today, a new case of malaria occurs in the U.S. only on rare occasions.

The severity of the disease depends very largely on the species of the Plasmodium parasite the patient happens to contract.

“Only two species of Plasmodium cause the dreaded relapses of the disease,” said Riehle. “One of them, Plasmodium vivax, can lie dormant in the liver for 10 to 15 years, but now drugs have become available that target the parasites in the liver as well as those in the blood cells.”

That said, there are no effective or approved malaria vaccines. A few vaccine candidates have gone to clinical trials but they were shown to either be ineffective or provide only short-term protection. If an effective vaccine were to be developed, distribution would be a major problem, Riehle said.

Researchers and health officials put higher hopes into eradication programs, which aim at the disease-transmitting mosquitoes rather than the pathogens that cause it.

“The question is ‘What can we do to turn a good vector into a bad vector?'” Riehle said.

“The eradication scenario requires three things: A gene that disrupts the development of the parasite inside the mosquito, a genetic technique to bring that gene into the mosquito genome and a mechanism that gives the modified mosquito an edge over the natural populations so they can displace them over time.”

“The third requirement is going to be the most difficult of the three to realize,” he added, which is why his team decided to tackle the other two first.

“It was known that the Akt enzyme is involved in the mosquito’s growth rate and immune response, among other things,” Riehle said. “So we went ahead with this genetic construct to see if we can ramp up Akt function and help the insects’ immune system fight off the malaria parasite.”

The second rationale behind this approach was to use Akt signaling to stunt the mosquitoes’ growth and cut down on its lifespan.

“In the wild, a mosquito lives for an average of two weeks,” Riehle explained. “Only the oldest mosquitoes are able to transmit the parasite. If we can reduce the lifespan of the mosquitoes, we can reduce the number of infections.”

His research team discovered that mosquitoes carrying two copies of the altered gene had lost their ability to act as malaria vectors altogether.

“In that group of mosquitoes, not a single Plasmodium oocyst managed to form.”

At this point, the modified mosquitoes exist in a highly secured lab environment with no chance of escape. Once researchers find a way to replace wild mosquito populations with lab-bred ones, breakthroughs like the one achieved by Riehle’s group could pave the way toward a world in which malaria is all but history.

###

This study was funded by the National Institutes of Health.

Reference: Corby-Harris et al. Activation of Akt Signaling Reduces the Prevalence and Intensity of Malaria Parasite Infection and Lifespan in Anopheles stephensi Mosquitoes. Public Library of Science (PLoS) Pathogens, July 2010 issue: www.plospathogens.org

How do you like them genetic engineering guys now?


Africa Fighting Malaria claims to be fighting malaria

July 6, 2010

In response to earlier analysis here, that Africa Fighting Malaria (AFM) does not appear to do much to fight malaria, Richard Tren wrote a comment to a post at TropIKA.

Tren is unlikely to respond here; I gather he does not want to answer questions.

I will comment more completely later — I’m still not sure just what AFM does to fight malaria.  It’s humorous that he calls my question an “ad hominem” attack; I ask the questions because Tren has led the fight in the unholy smear campaign against Rachel Carson, against the U.S. Fish and Wildlife Service, against dozens of other scientists and science itself, against saving the bald eagle, against wise use of pesticides, against bed nets, against fighting malaria other than poisoning Africa. Most recently, as Tren mentions, he published a book that repeats much of the inaccurate claims and hoaxes he has relied on before.  But he’s concerned about attacks on him personally, and not the substance.

Why am I concerned at all?  The AFM-led assault on the World Health Organization, Rachel Carson, malaria fighters in public health, scientists and environmentalists  has come at an extremely high cost in human life. It is impossible to know how many people have died needlessly from malaria, yellow fever, leishmaniasis, dengue fever and other insect-borne diseases in the absence of medical care or prevention programs in lieu of DDT, but it must be millions — many of them could have been saved but for policy-makers’ beliefs that an increase in DDT could poison these people to health quickly and cheaply.  The campaign in favor of DDT has hampered serious efforts to fight malaria especially, such as Nothing But Nets and USAID’s support for prophylactic measures to beat the disease.

Does Tren answer the question well, what does AFM actually do to fight malaria?

Help me find some substance here in Tren’s letter (unedited by me in any way):

Paul,

It’s hard to know whether or not to respond to this. To say that we are ‘under fire’ because of the sniping and ad-hominem attacks from a blogger who has, for some or other reason, decided to take issue with my organization is an exaggeration to say the least. However even though your post has so far received zero comments I’d like to make a few things clear for the record.

AFM was founded in South Africa in 2000 and we opened an office in the United States in 2003. We maintain an office and a presence in South Africa as well as an office in the Washington DC. You say that we have focused most of our attention on one issue – the desirability of using DDT in mosquito control programs. Actually we focus on malaria control programs, not mosquito control programs; but to an extent you are correct. We have focused on this issue because DDT continues to play an important role in malaria control in many southern African programs (and in some other countries) and over the years other countries, such as Uganda have attempted to use DDT but have been harshly criticized and domestic and international groups forcing DDT spraying programs to close down. AFM defends DDT because of its outstanding record in saving lives and because it is under attack. The scare stories and smear campaigns against this insecticide are so pervasive and the misunderstanding about it so widespread that it is vital for some group or individual to provide a counterbalance, based on sound science.

AFM was a critical voice in securing an exemption for the use of DDT in the Stockholm Convention, and our research and advocacy work helped to usher in far-reaching reforms to US support for malaria control. We recently published a major book on DDT and its role in malaria control – The Excellent Powder – see http://www.excellentpowder.org. Additionally, we have responded to several recent publications that seek to limit the use of DDT (and interestingly other insecticides such as pyrethroids), with letters in Environmental Health Perspectives, British Journal of Urology International and working papers published on our own website. We have publicly exposed and criticized the way in which anti-insecticide advocacy groups, like Pesticide Action Network, have lobbied against indoor residual spraying programs that are funded and maintained by the President’s Malaria Initiative (PMI). All of these letters and papers can be accessed from our website – if any of your readers have any difficulty in accessing them, I’d be happy to forward them.

A word on our critical review of a paper published in British Journal of Urology International. Several researchers from the University of Pretoria published a paper in late 2009 claiming that DDT use in IRS would increase the chance that a boy would be born with a urogenital birth defect by around 33%. This paper was widely covered in the media and caused considerable problems for the malaria control programs in southern Africa. One scientist in particular even claimed on a public TV program that DDT was linked to the case of intersex South African athlete, Caster Semenya; this was further promoted in the print media causing great concern among people living in malaria areas. As we documented in our review, the research paper was very deeply flawed and the conclusions of the authors were premature to say the least. Although it required a considerable investment of time and effort, we respond with a formal review of both the paper and the outrageous claims made in the media for which there was no scientific evidence. Our letter to the journal, which was co-authored by some senior malaria scientists from South Africa, was published in the journal. Although the authors of the paper were given ample opportunity to respond to our criticisms, they declined – which is telling.

You make the point that we have focused on DDT – true, we have done so because there is a need for someone to respond to the never-ending claims of harm. Someone has to stand up and defend the malaria control programs that are using DDT and implementing effective malaria control measures – perhaps if some of the other advocacy groups or individuals stepped up and helped to defend IRS and the use of public health insecticides, we wouldn’t have to spend so much of our time and energy doing it.

In addition to defending the use of public health insecticides, we strongly advocate for investments in new insecticides and against regulations and policies that may hamper access to insecticides or investment in new insecticides. For instance in 2008/9 we coordinated a response to proposed EU regulation of insecticides that could limit access to insecticides. (The various documents that I describe are available on our website) As an example of our work in this regard, we recently held a successful policy briefing on Capitol Hill (in Washington, D.C.) involving stakeholders from advocacy groups, donor agencies and the private sector. Again details of this are available on our website.

Aside from our advocacy and defense of public health insecticides, we have been successful in exposing the ongoing use of sub-standard malaria medicines as well as fake medicines in Africa. Our research studies have been published in Malaria Journal, PLoS One, and other journals. In order to maintain this project and to get safe and effective malaria medicines out to communities we have raised funds for malaria treatments and have focused on increasing access in Uganda. Again, details are available on our website.

Lastly AFM is involved in a research and advocacy program to remove import tariffs and non-tariff barriers from malaria commodities. As malaria programs are scaled up, it is increasingly important to ensure that barriers to access are removed – import tariffs and non-tariff barriers can be significant and AFM is very excited to be involved in this important area of research and advocacy. See http://www.m-tap.org for more details.

So, I hope that this helps to answer the questions about what we do. We are a policy and research group, we have never pretended to be anything else and our track record stands for itself.

Paul, if you want to have a discussion about our work, I’d be happy to correspond with you and your colleagues on a basis of cordiality and respect. I would be delighted to debate our work on DDT, public health insecticides, drug quality and import tariffs and non-tariff barriers, but let’s leave the sniping bloggers and their misleading and biased comments out of this.

Richard Tren


Malaria tough to beat: Canadian Press review of The Fever

July 5, 2010

At Canadian Press, Carl Hartman reviewed The Fever: How Malaria Has Ruled Humankind for 500,000 Years, a dramatic work of non-fiction about malaria and mosquitoes by Sonia Shah (Sarah Crichton Books/Farrar, Straus and Giroux 2010).  Hartman concluded:

Evidence of mosquito resistance to the drug has been recently reported.

Shah is skeptical of a surge of private charity that emphasizes the use of mosquito nets following the decline of government-led anti-malaria programs in the 1990s. Acknowledging the contributions of Bill Gates and former Presidents George W. Bush and Bill Clinton, she lists Veto the ‘Squito, a youth-led charity; Nothing but Nets, an anti-malarial basketball charity; and World Swim Against Malaria. She quotes The New York Times as decrying “hip ways to show you care.”

Her own comment: “Just because something is simple doesn’t necessarily mean that people will do it.”

“(T)he schools, roads, clinics, secure housing and good governance that enable regular prevention and prompt treatment must be built,” she concludes. “Otherwise the cycle of depression and resurgence will begin anew; malaria will win, as it always has.”

Anti-environmentalists, anti-scientists, and other conservatives won’t like the book:  It says we can’t beat malaria cheaply by just spreading a lot of poison on Africa and Africans.

Especially if you’re doing the noble thing and vacationing in the Gulf of Mexico in Alabama, or Mississippi, or Louisiana, you may want to read this.  If you’re vacationing in the Hamptons, Martha’s Vinyard, or Cannes, buy several copies to pass out at dinner with your friends.

More:


Annals of DDT: Malawi ponders DDT use against malaria

June 21, 2010

Here’s a news story that Richard Tren and Donald North hope neither you nor anyone else will read.  It says that Malawi is pondering whether to use DDT for Indoor Residual Spraying (IRS) to fight malaria this season — and it lists several other nations that use DDT in exactly that way.

Why do the Chronically Obsessed With Rachel Carson (COWRC) like Tren and North hope you won’t see it?

It says DDT is being used broadly against malaria, in several nations on two continents.  That directly contradicts one of their favorite claims, that environmentalists (always unnamed) prevent the use of DDT anywhere.  It also shows clearly that DDT is not banned in Africa, another claim they like to blame on unnamed environmentalists and “left” do-gooders.

Facts of the malaria fight are that the consensus among serious malaria-warriors favors the integrated pest management schemes Rachel Carson wrote would be the savior of pesticides, in 1962 (in international circles, it’s called integrated vector management, “vectors” being the carriers of disease).  Quite to the contrary of Rachel Carson’s being the cause of needless deaths to malaria, her methods are saving lives.  The death toll from malaria is lower now than it was when DDT was used more broadly, and used outdoors.

Malawi going for DDT to fight malaria

Nyasa Times, June 20, 2010

Malawi is contemplating to start using DDT, an organochlorine pesticide, as a precaution in the fight against malaria in the country.

Chris Kang'ombe, Malawi Secretary for Health - Nyasa Times

Chris Kang'ombe, Malawi Secretary for Health - Nyasa Times

Principal Secretary in the Ministry of Health Chris Kang’ombe (pictured) said in Lilongwe during the launch of this year’s anti-malaria campaign themed, “Malungo zii (Kick out malaria)”.

“We know that our friends from Zambia and other countries are using it as an indoor residual spraying and it is working, so we are looking into it if we can do the same,” said Kang’ombe.

According to 2004-2009 statistical data provided by the UN, World Bank, WHO and UNAIDS, there were 4,204,468 reported malaria cases, 12,950 estimated malaria deaths and 7,132 reported malaria deaths in Malawi.

“We sent a team to Zambia to do a research on the use of DDT in fighting malaria and once the recommendations are made we will see what to do. We know that they are successful but we have to look at what effects DDT has on environment and agriculture taking into consideration that our economy is agro-based,” he said.

Some commentators and activists have raised concerns about DDT contaminating the environment if it is used in vector control. As with the other insecticides used in IRS, DDT causes minimal or zero contamination of the wider environment. Because DDT does not escape into the wider environment, it poses little or no threat to wildlife.

Results from the 2008 MIS demonstrated the dramatic progress Zambia is making in its fight to control malaria. Since 2006, malaria parasite prevalence in children has been reduced by 50%, and moderate to severe anemia has been reduced by more than 60%.

DDT is not only highly effective in malaria control, but it is also significantly cheaper than the other insecticides that are suitable for indoor residual spraying (IRS). It is easy to use and safe for both the residents of houses sprayed and the sprayers themselves.

More people than ever are sleeping under bed nets and two-thirds of all households are protected by at least one ITN or indoor residual spraying.

Use of DDT to fight malaria has been increasing since it was endorsed in 2006 by the World Health Organization and the President’s Malaria Initiative (PMI), a U.S. aid program launched by former President Bush.

USAID provides approximately $26 million per year to Malawi under PMI to purchase and distribute about 1,600,000 long life insecticide-treated bed nets, according to its Malawi office fact sheet.

“It is also used to purchase and distribute a national supply of over 6.6 million doses of life saving artemisinin-based combination therapy (ACT) drugs, implement an Indoor Residual Spraying (IRS) programme for 28,000 households and provide preventive treatment for malaria nationwide for pregnant women attending antenatal care,” reads part of the report.

PMI activities began in Malawi in 2007 and the U.S. government has committed a total of $107 million for addressing malaria over the five year period of 2007-2012.

“With six million cases of malaria per year in Malawi, the fight against malaria is far from over but through close collaborations between the governments of the United States and Malawi and other partners, we are making progress,” said Curt Reintsma, USAID Mission Director.

In 2009, data showed that use of ITNs by vulnerable children improved to 61% from 37% in 2005.

“We rededicate our partnership between Malawi and the United States to defeat this preventable and treatable killer,” said Reintsma.

Kang’ombe said the ministry has been implementing several malaria control strategies aimed at reducing the burden of malaria to a level of no public health significance in Malawi. These strategic areas which are coordinated by the NMCP includes; Malaria Case Management, Intermittent Preventive Treatment for pregnant women (IPTp) where women are routinely provided with at least 2 doses of SP during pregnancy.

“Integrated Vector Management is another major strategy that the ministry of health is implementing as one of the control measures for malaria in Malawi. This involves distribution of Insecticide Treated Mosquito nets and Indoor Residual Spraying. Operational Research, Monitoring and Evaluation and Information, Education and Communication/Advocacy are some of the cross cutting strategic areas that are also being implemented,” said Kang’ombe adding.

Some nations which are using DDT are: Ethiopia, South Africa, India, Mauritius, Myanmar, Yemen, Uganda, Mozambique and Swaziland, Zimbabwe, North Korea, Eritrea, Gambia, Namibia and Zambia.

DDT may have a variety of human health effects, including reduced fertility, genital birth defects, breast cancer, diabetes and damage to developing brains. Its metabolite, DDE and can block male hormones.

See also:


Fighting malaria: Bed nets crucial

June 12, 2010

Nota bene:  DDT not labeled “crucial”


Does Africa Fighting Malaria actually fight malaria?

June 11, 2010

This spring’s publication of a book, The Excellent Powder, by Richard Tren and Donald Roberts, repeating most of the false claims about malaria and DDT, got me wondering. Their organization, Africa Fighting Malaria (AFM):

Does AFM do anything to fight malaria? At its own website it makes some astoundingly grandiose claims:

In its seven years of operation, AFM has helped transform malaria control by taking on and turning around failing public health institutions, donor agencies and governments.

Offhand I can’t think of any public health institution AFM has even been involved with, other than its undeserved criticism of the World Health Organization — and if anyone knows of any donor agency or government AFM has “turned around,” the history books await your telling the story.

Africa Fighting Malaria springs to life every year around World Malaria Day, April 25, with editorials claiming environmentalists have killed millions. AFM seems to be one of the sources of the bizarre and false claim that Rachel Carson is a “mass murderer.” AFM makes noise whenever there is difficulty getting a DDT spraying campaign underway in any part of Africa, for any reason, quick to lay the blame on environmentalists, even though the blame generally rests in other places. AFM is quick on the draw to try to discredit all research into DDT that suggests it poses any health threat, though so far as I can tell AFM has published no counter research, nor has it conducted any research of its own.

In its 2009 Annual Report, AFM proudly states “AFM is the only advocacy group that routinely supports IRS [Indoor Residual Spraying] and through its advocacy work defends the use of DDT for malaria control.”

Cleverly, and tellingly, they do not reveal that IRS in integrated vector (pest) management is what Rachel Carson advocated in 1962, nor do they mention that it is also supported by the much larger WHO, several nations in Africa, and the Gates Foundation, all of whom probably do more to fight malaria when they sneeze that AFM does intentionally.

Google and Bing searches turn up no projects the organization actually conducts to provide bed nets, or DDT, or anything else, to anyone working against malaria. I can’t find any place anyone other than AFM describes any activities of the group.

AFM has impressive video ads urging contributions, but the videos fail to mention that nothing in the ad is paid for by AFM, including especially the guy carrying the pesticide sprayer.

Looking at the IRS Form 990s for the organization from 2003 through 2008 (which is organized in both the U.S. and South Africa), it seems to me that the major purpose of AFM is to pay Roger Bate about $100,000 a year for part of the time, and pay Richard Tren more than $80,000 a year for the rest of the time.

Can anyone tell me, what has Africa Fighting Malaria ever done to seriously fight malaria? One could make the argument that if you sent $10 to Nothing But Nets, you’ve saved more lives than the last $1 million invested in AFM, and more to save lives than AFM in its existence.

Tip of the old scrub brush to Pharyngula and Antievolution.org, even though AFM wasn’t what they were targeting.

Update: Tim Lambert at Deltoid sent some traffic this way, which caught the attention of Eli Rabett, which reminded me that there really is more to this story about Africa Fighting Malaria, and you ought to read it at Deltoid and Rabett’s warren.

Formatting issues More (updated September 24, 2013):


Does Africa Fighting Malaria actually fight malaria? (format fix)

June 11, 2010

[Editor’s note: This post is an attempt to fix a formatting error in the earlier post with the almost-same headline, which has some corruption in it I have been unable to find or fix, but which renders the text almost unreadable.  My apologies.  Have not yet figured out how to move comments, alas; check the old post.]

This spring’s publication of a book, The Excellent Powder, by Richard Tren and Donald Roberts, repeating most of the false claims about malaria and DDT, got me wondering. Their organization, Africa Fighting Malaria (AFM):

Does AFM do anything to fight malaria? At its own website it makes some astoundingly grandiose claims:

In its seven years of operation, AFM has helped transform malaria control by taking on and turning around failing public health institutions, donor agencies and governments.

Offhand I can’t think of any public health institution AFM has even been involved with, other than its undeserved criticism of the World Health Organization — and if anyone knows of any donor agency or government AFM has “turned around,” the history books await your telling the story.

Africa Fighting Malaria springs to life every year around World Malaria Day, April 25, with editorials claiming environmentalists have killed millions.  AFM seems to be one of the sources of the bizarre and false claim that Rachel Carson is a “mass murderer.”  AFM makes noise whenever there is difficulty getting a DDT spraying campaign underway in any part of Africa, for any reason, quick to lay the blame on environmentalists, even though the blame generally rests in other places.  AFM is quick on the draw to try to discredit all research into DDT that suggests it poses any health threat, though so far as I can tell AFM has published no counter research, nor has it conducted any research of its own.

In its 2009 Annual Report, AFM proudly states “AFM is the only advocacy group that routinely supports IRS [Indoor Residual Spraying] and through its advocacy work defends the use of DDT for malaria control.”

Cleverly, and tellingly, they do not reveal that IRS in integrated vector (pest) management is what Rachel Carson advocated in 1962, nor do they mention that it is also supported by the much larger WHO, several nations in Africa, and the Gates Foundation, all of whom probably do more to fight malaria when they sneeze that AFM does intentionally.

Google and Bing searches turn up no projects the organization actually conducts to provide bed nets, or DDT, or anything else, to anyone working against malaria.  I can’t find any place anyone other than AFM describes any activities of the group.

AFM has impressive video ads urging contributions, but the videos fail to mention that nothing in the ad is paid for by AFM, including especially the guy carrying the pesticide sprayer.

Looking at the IRS Form 990s for the organization from 2003 through 2008 (which is organized in both the U.S. and South Africa), it seems to me that the major purpose of AFM is to pay Roger Bate about $100,000 a year for part of the time, and pay Richard Tren more than $80,000 a year for the rest of the time.

Can anyone tell me, what has Africa Fighting Malaria ever done to seriously fight malaria?

One could make the argument that if you sent $10 to Nothing But Nets, you’ve saved more lives than the last $1 million invested in AFM, and more to save lives than AFM in its existence.

Tip of the old scrub brush to Pharyngula and Antievolution.org, even though AFM wasn’t what they were targeting.

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Update: Tim Lambert at Deltoid sent some traffic this way, which caught the attention of Eli Rabett, which reminded me that there really is more to this story about Africa Fighting Malaria, and you ought to read it at Deltoid and Rabett’s warren.

More (updated September 24, 2013):


Washington Times felled by DDT poisoning

June 9, 2010

Washington Times‘ owner, the Unification Church, put the paper up for sale earlier this year — tired of losing north of $30 million a year on the thing.  It appears that, in a cost-cutting move, the paper has laid off all its fact checkers and most of its editors.

And anyone with a brain.

DDT use in the U.S. peaked in 1959, with 70 million pounds of the stuff used in that year.  This ad comes from about that time.

DDT use in the U.S. peaked in 1959, with 70 million pounds of the stuff used in that year. This ad for a French product containing DDT comes from about that time.

How do we know?

Our old friend Stephen Milloy complains about Time Magazine’s “50 Worst Inventions” list, including, especially the listing of DDT, as discussed earlier.  It’s wrong, and silly.  Good fact checkers, and good editors, wouldn’t let such claptrap make it into print.

Milloy packed an astounding number of whoppers in a short paragraph about DDT:

From 1943 through its banning by the EPA in 1972, DDT saved hundreds of millions of lives all over the world from a variety of vector-borne diseases. Even when Environmental Protection Agency Administrator (and closeted environmental activist) William D. Ruckelshaus banned DDT in 1972, he did so despite a finding from an EPA administrative law judge who, after seven months and 9,000 pages of testimony, ruled that DDT presented no threat of harm to humans or wildlife. Today, a million children die every year from malaria. DDT could safely make a tremendous dent in that toll.

Let us count the errors and falsehoods:

1.  DDT was used against typhus from 1943 through about 1946, and against bedbugs; it saved millions, but not hundreds of millions. Death tolls from typhus rarely rose over a million a year, if it ever did.  Bedbugs don’t kill, they just itch.  If we add in malaria after 1946, in a few years we push to four million deaths total from insect-borne diseases — but of course, that’s with DDT being used.  If we charitably claim DDT saved four million lives a year between 1943 and 1972, we get a total of 117 million lives saved.  But we know that figure is inflated a lot.

Sure, DDT helped stop some disease epidemics.  But it didn’t save “hundreds of millions of lives” in 29 years of use.  The National Academy of Sciences, in a book noting that DDT should be banned because its dangers far outweigh its long-term benefits, goofed and said DDT had saved 500 million lives from malaria, and said DDT is one of the most beneficial chemicals ever devised by humans.  500 million is the annual infection rate from malaria, with a high of nearly four million deaths, but in most years under a million deaths.  Malaria kills about one of every 500 people infected in a year.  That’s far too many deaths, but it’s not as many lives saved as Milloy claims.

NAS grossly overstated the benefits of DDT, and still called for it to be banned.

The question is, why is Milloy grossly inflating his figures?  Isn’t it good enough for DDT to be recognized as one of the most beneficial substances ever devised?

My father always warned that when advertisers start inflating their claims, they are trying to hide something nasty.

2.  Ruckelshaus didn’t ban DDT on his own — nor was he a “closeted” environmentalist. He got the job at EPA because he was an outstanding lawyer and administrator, with deep understanding of environmental issues — his environmentalism was one of his chief qualifications for the job.  (Maybe Milloy spent the ’70s in a closet, and assumes everyone else did, too?)  But EPA acted only when ordered to act by two different federal courts (Judge David Bazelon ordered an end to all use of DDT at one of the trials).  At trial, DDT had been found to be inherently dangerous and uncontrollable.  Both courts were ready to order DDT banned completely, but stayed those orders pending EPA’s regulatory hearings and action.

In fact, regulatory actions against DDT began in the 1950s; by 1970, scientific evidence was overwhelming (and it has not be contradicted:

The U.S. Department of Agriculture, the federal agency with responsibility of regulating pesticides before the formation of the U.S. Environmental Protection Agency in 1970, began regulatory actions in the late 1950s and 1960s to prohibit many of DDT’s uses because of mounting evidence of the pesticide’s declining benefits and environmental and toxicological effects. Rachel Carson’s book Silent Spring in 1962 stimulated widespread public concern over the dangers of improper pesticide use and the need for better pesticide controls.

In 1972, EPA issued a cancellation order for DDT based on adverse environmental effects of its use, such as those to wildlife, as well as DDT’s potential human health risks. Since then, studies have continued, and a causal relationship between DDT exposure and reproductive effects is suspected. Today, DDT is classified as a probable human carcinogen by U.S. and international authorities. This classification is based on animal studies in which some animals developed liver tumors.

DDT is known to be very persistent in the environment, will accumulate in fatty tissues, and can travel long distances in the upper atmosphere. Since the use of DDT was discontinued in the United States, its concentration in the environment and animals has decreased, but because of its persistence, residues of concern from historical use still remain.

3.  Judge Sweeney ruled that DDT is dangerous to humans and especially wildlife, but that DDT’s new, Rachel-Carson-friendly label would probably protect human health and the environment. EPA Administrative Law Judge Edmund Sweeney presided at the hearings in 1971.  As in the two previous federal court trials, DDT advocates had ample opportunity to make their case.  32 companies and agencies defended the use of DDT in the proceeding.  Just prior to the hearings, DDT manufacturers announced plans to relabel DDT for use only in small amounts, against disease, or in emergencies, and not in broadcast spraying ever.  This proved significant later.

Judge Sweeney did not find that DDT is harmless.  Quite to the contrary, Sweeney wrote in the findings of the hearing:

20.  DDT can have a deleterious effect on freshwater fish and estuarine organisms when directly applied to the water.

21.  DDT is used as a rodenticide. [DDT was used to kill bats in homes and office buildings; this was so effective that, coupled with accidental dosing of bats from their eating insects carrying DDT,  it actually threatened to wipe out some species of bat in the southwest U.S.]

22.  DDT can have an adverse effect on beneficial animals.

23.  DDT is concentrated in organisms and can be transferred through food chains.

DDT use in the U.S. had dropped from a 1959 high of 79 million pounds, to just 12 million pounds by 1972.  Hazards from DDT use prompted federal agencies such as the Department of Agriculture and Department of Interior to severely restrict or stop use of the stuff prior to 1963.  Seeing the writing on the wall, manufacturers tried to keep DDT on the market by labeling it very restrictively.  That would allow people to buy it legally,  and then use it illegally, but such misuse can almost never be prosecuted.

Sweeney wrote that, under the new, very restrictive label, DDT could be kept on the market.  Ruckelshaus ruled that EPA had a duty to protect the environment even from abusive, off-label use, and issued a ban on all agricultural use.

4.  More DDT today won’t significantly reduce malaria’s death toll. Milloy fails to mention that DDT use against malaria was slowed dramatically in the mid-1960s — seven years before the U.S. banned spraying cotton with it — because mosquitoes had become resistant and immune to DDT.  DDT use was not stopped because of the U.S. ban on spraying crops; DDT use was reduced because it didn’t work.

Milloy also ignores the fact that DDT is being used today.  Not all populations of mosquitoes developed immunity, yet.  DDT has a place in a carefully-managed program of “integrated vector management,” involving rotating several pesticides to ensure mosquitoes don’t evolve immunity, and spraying small amounts of the pesticide on the walls of houses where it is most effective, and ensuring that DDT especially does not get outdoors.

To the extent DDT can be used effectively, it is being used.  More DDT can only cause environmental harm, and perhaps harm to human health.

Most significantly, Milloy grossly overstates the effectiveness of DDT.  Deaths from malaria numbered nearly 3 million a year in the late 1950s; by the middle 1960s, the death rate hovered near 2 million per year.  Today, annual death rates are under a million — less than half the death rate when DDT use was at its peak.  Were DDT the panacea Milloy claims, shouldn’t the death numbers go the other way?

Milloy gets away making wild, misleading and inaccurate claims when editors don’t bother to read his stuff, and they don’t bother to ask “does this make sense?”  Nothing Milloy claims could be confirmed with a search of PubMed, the most easily accessible, authoritative data base of serious science journals dealing with health.

Obviously, Washington Times didn’t bother to check.  Were all the fact checkers let go?

Even more lunatic

Milloy also attacked the decision to get lead out of gasoline.  Ignoring all the facts and the astoundingly long history of severe health effects from lead pollution, Milloy dropped this stinking mental turd:

As to leaded gasoline, we can safely say that leaded gasoline helped provide America and the world with unprecedented freedom and fueled tremendous prosperity. We don’t use leaded gasoline in the United States anymore, but more because people simply don’t like the idea of leaded gasoline as opposed to any body of science showing that it caused anybody any harm. It’s the dose that makes the poison, and there never was enough lead in the ambient environment to threaten health.

The U.S. found that getting lead out of gasoline actually improved our national IQ.  Lead’s health effects were so pervasive, there was an almost-immediate improvement in health for the entire nation, especially children, when lead was removed.  Denying the harms of tetraethyl lead in gasoline goes past junk science, to outright falsehood.

What is Milloy’s fascination with presenting deadly poisons as “harmless?”  Why does he hate children so?

Why do publications not catch these hallucination-like errors and junk science promotions when he writes them?

Antidote to DDT poisoning in humans:  Spread the facts:

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Measles vaccine: Britain bans anti-vaxxer Wakefield

May 25, 2010

Dr. Andrew Wakefield’s license to practice medicine in Britain was stripped away by British authorities earlier today, due to his “ethical lapses” in conducting research against measles vaccines.

Wakefield’s research claims, published in the distinguished medical journal Lancet in 1998, sparked a worldwide hysteria over the claimed link of Mumps-Measles-Rubella vaccine (MMR) to autism.  The journal earlier withdrew the article when the research was exposed as faulty and reaching erroneous conclusions.

Lancet retracted the paper earlier this year.

Effects of Wakefield’s errors ripple across the globe, as children pay the price with measles rates up worldwide, especially in Africa, and in North AmericaRob Breckenridge described the damage for the Calgary Herald:

However, Wakefield’s foul legacy is very much consequential. His latest comeuppance is hopefully a small step in undoing that legacy’s damage, but much damage has already been done.

Wakefield authored a now-discredited paper published in 1998 in The Lancet, which implied that the MMR (measles-mumps-rubella) vaccine was linked to autism.

Numerous studies have shown no such link exists, but Wakefield’s research had the predictable effect of scaring people away from the MMR vaccine. Vaccination rates plummeted in the U.K., and the number of measles cases soared.

In 2008 in the U.K., there were almost 1,400 cases of measles compared with 56 the year Wakefield’s paper was published. In 2006, a 13-year-old boy died from measles — the first time in 14 years such a death had been recorded.

On top of the multiple studies rejecting the MMRautism link, The Lancet issued a formal retraction of Wakefield’s paper in February, citing his unethical and irresponsible conduct.

Once a disease like measles becomes rare, we tend to drop our guard, either forgetting how serious it is or assuming it can never come back. As we’ve seen in the U.K. it can come back with a vengeance. Unfortunately, it’s not only the U.K. where we’re learning that lesson.

This month, Alberta Health Services confirmed five cases of measles in the Calgary area. Given our lack of recent experience with measles — there was only one case provincewide in 2009 — AHS offered a primer on the disease.

Measles is extremely contagious, meaning one need not have close contact with an infected person. There is no cure, but vaccination can prevent it. There are still pockets of the province where vaccination rates are low and measles cases there have been higher.

Southwestern Alberta is one of those regions. Not only has measles made a comeback there — a 2000 outbreak closed a Lethbridge-area private school — but cases of mumps and whooping cough have been documented over the past two years.

In B.C., 87 measles cases have been confirmed this year. It’s believed many stem from infected out-of-country visitors at the Vancouver Olympics.

All cases involve people who were either not vaccinated, or only partially vaccinated. Eight cases were associated with a single household, where no one had been vaccinated.

As Typhoid Mary denied she could be the cause of the deaths of the people she cooked for, and so continued cooking, Wakefield promises to keep up his campaign for measles.

Instapundit’s Glenn Reynolds poisoned by DDT

May 24, 2010

You can read about it here, at Instapundit.

Reynolds wants DDT back because dengue fever showed up at Key West.  News for Reynolds:  We see it in Texas all the time, but usually among poorer people with Hispanic heritage who live along the Rio Grande.  (Funny how these conservative nutballs all worry about people, so long as they’re white, and rich enough to travel to tropical vacation spots; where’s Reynolds to worry about the people who supply his fruits and vegetables?)

One solution:  Improve health care to cure humans with dengue, and then mosquitoes that spread it have no pool of infection to draw from — mosquito bites become just mosquito bites.

Other preventives:  Drain mosquito breeding areas (tires, flower pots, potholes, etc.) within 50 yards of human habitation.  Mosquitoes don’t fly far, and if they can’t breed where people are, they won’t travel to find human victims.

Stupid, destructive solutions:  Spray DDT.  DDT kills insects, bats and birds that prey on mosquitoes much more effectively than it kills mosquitoes, and mosquitoes evolve resistance faster, and rebreed faster. DDT is especially deadly against brown pelicans — maybe Reynolds figures we don’t need to worry about them any more, since they’re under assault from the oil slick that threatens to kill the estuaries of Louisiana.  Were he concerned about the birds, surely he’d have realized his error, right?

So, why did Glenn Reynolds get stupid about DDT?  Why is he promoting DDT, instead of promoting ways to fight dengue?

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But, then, Glenn Reynolds has been a fool for poisoning (anyone but himself) for a long time:

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United Conservatives of Virginia swallow the DDT poison, too.  Don’t these people ever study history?

Transmission of Dengue Fever

Transmission of Dengue Fever

Help Glenn Reynolds recover from DDT poisoning, let others know the facts:

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The rear of the horse that measles rode in on

May 23, 2010

Why would people fail to inoculate their kids against measles, and thereby contribute to deadly epidemics?

There was this guy in Britain, Andrew Wakefield, who published a study suggesting a link between measles vaccines and autism.  But it turned out his research didn’t support that claim.  Then it turned out he was under contract to produce a paper that made that claim regardless the science, for a lawsuit.

Darryl Cunningham's graphic account of measles vaccine hysteria, one page

A page from Darryl Cunningham's graphic account of measles vaccine hysteria, "The Facts in the Case of Dr. Andrew Wakefield." TallGuyWrites (Darryl Cunningham)

Darryl Cunningham created a concise, 15-page graphic accounting of the story of how the misdeeds of one physician led to a world-wide, child-killing panic.  If you do not know the story, go read it.  You should be troubled by the story it tells.  Be sure to read it through.  Cunningham is thorough in his debunking of the hysteria the anti-vaxxers promote, and you should know it all.

Darryl Cunningham's graphic story, "The Facts in the Case of Dr. Andrew Wakefield"

Another page from Darryl Cunningham's graphic story, "The Facts in the Case of Dr. Andrew Wakefield" about the motivations behind the hysteria.

Then send a copy to Jenny McCarthy, or anyone else who carries the torch of ignorance-based hysteria against vaccines and in favor of disease.

Dr. Wakefield’s original paper was retracted by the publisher — it’s no longer considered valid science.  It’s a hoax.  No subsequent research confirmed any links to autism.  Serious, large-scale follow-up studies revealed no connection whatsoever between measles vaccine and autism.

Measles is a nasty disease, tough to eradicate, and working hard to come back and get your children and grandchildren.  Don’t be suckered.

Andrew Wakefield created a hoax.  Those who rely on his study rely on bogus science, voodoo science.  History tells us that, if we stop the fight against measles, people will die.

Would you contribute to publishing this comic for distribution in pediatrician’s waiting rooms?

More:

Tip of the old scrub brush to JD 2718.


Decline and fall of the Wall Street Journal — DDT poisoning to blame?

April 27, 2010

Rupert Murdoch’s purchase of the Wall Street Journal provoked groans in 2007, but especially among those of us who had dealt with the news teams of the paper over the previous couple of decades.

For good reason, we now know.  An opposite-editorial page article in the European edition shows why.

Wall Street Journal images - Gothamite New York image

Richard Tren and Donald Roberts, two anti-environmentalist, anti-science lobbyists, wrote a slam at scientists, environmentalists, malaria fighters and the UN, making false claims that these people somehow botched the handling of DDT and allowed a lot of children to die.  Tren, Roberts and the Wall Street Journal should be happy to know that their targeting essentially public figures, probably protects them from libel suits.

Most seriously, the article just gets the facts wrong.  Facts of science and history — easily checked — are simply stated erroneously.  Sometimes the statements are so greatly at odds with the facts, one might wonder if there was malignant intent to skew history and science.

This is journalistic and newspaper malpractice.  Any national journal, like the WSJ, should have fact checkers to check out at least the basic claims of op-ed writers.  Did Murdock fire them all?  How can anyone trust any opinion expressed at the Journal when these guys get away with a yahoo-worthy, fact-challenged piece like this one?

Tren and Roberts make astounding errors of time and place, attributing to DDT magical powers to cross space and time.  What are they thinking?  Here are some of the errors the Journals fact checkers should have caught — did Murdoch fire all the fact checkers?

  1. Beating malaria is not a question of having scientific know howCuring a disease in humans requires medical delivery systems that can diagnose and treat the disease.  DDT does nothing on those scores.  Beating malaria is a question of will and consistency, political will to create the human institutions to do the job.  DDT can’t help there.
  2. DDT wasn’t the tool used to eradicate malaria from the U.S.  The U.S. Centers for Disease Control — an agency set up specifically to fight diseases like malaria — says malaria was effectively eradicated from the U.S. in 1939.  DDT’s pesticide capabilities were discovered in mid-1939, but DDT was not available to fight malaria, for civilians, for another seven years.  DDT does not time travel.
  3. DDT doesn’t have a great track record beating malaria, anywhere. Among nations that have beaten malaria, including the U.S., the chief tools used were other than pesticides.  Among nations where DDT is still used, malaria is endemic.  DDT helped, but there is no place on Earth that beat malaria solely by spraying to kill mosquitoes.  Any malaria fighter will tell you that more must be done, especially in improving medical care, and in creating barriers to keep mosquitoes from biting.
  4. Beating malaria in the U.S. involved draining breeding areas, screening windows to stop mosquitoes from entering homes, and boosting medical care and public health efforts. These methods are the only methods that have worked, over time, to defeat malaria.  Pesticides can help in a well-managed malaria eradication campaign, but no campaign based on spraying pesticides has ever done more than provide a temporary respite against malaria.
  5. DDT is not a magic bullet against malaria. Nations that have used DDT continuously and constantly since 1946, like Mexico, and almost like South Africa, have the same malaria problems other nations have.  Nations that have banned DDT have no malaria.
  6. DDT has never been banned across most of the planet.  Even under the pesticide treaty that specifically targets DDT-classes of pesticides for phase out, there is a special exception for DDT.  DDT was manufactured in the U.S. long after it was banned for agricultural use, and it is manufactured today in India and China.  It is freely available to any government who wishes to use it.
  7. People in malaria-prone areas are not stupid. Tren and Roberts expect you to believe that people in malaria-prone nations are too stupid to buy cheap DDT and use it to save their children, but instead require people like Tren and Roberts to tell them what to do.  That’s a pretty foul argument on its face.
  8. DDT is a dangerous poison, uncontrollable in the wild. Tren and Roberts suggest that DDT is relatively harmless, and that people were foolish to be concerned about it.  They ignore the two federal trials that established DDT was harmful, and the court orders under which EPA (dragging its feet) compiled a record of DDT’s destructive potential thousands of pages long.  They ignore the massive fishkills in Texas and Oklahoma, they ignore the astounding damage to reproduction of birds, and the bioaccumulation quality of the stuff, which means that all living things accumulate larger doses as DDT rises through the trophic levels of the food chain.  Predatory birds in American estuaries got doses of DDT multiplied millions of times over what was applied to be toxic to the smallest organisms.
    DDT was banned in the U.S. because it destroys entire ecosystems.  The U.S. ban prohibited its use on agriculture crops, but allowed use to fight malaria or other diseases, or for other emergencies.  Under these emergency rules, DDT was used to fight the tussock moth infestation in western U.S. forests in the 1970s.
  9. Again, DDT’s ban in the U.S. was not based on a threat to human health. DDT was banned because it destroys natural ecosystems. So any claim that human health effects are not large, misses the point.  However, we should not forget that DDT is a known carcinogen to mammals (humans are mammals).  DDT is listed as a “probable human carcinogen” by the American Cancer Society and every other cancer-fighting agency on Earth.  Why didn’t the Journal’s fact checkers bother to call their local cancer society?  DDT is implicated as a threat to human health, as a poison, as a carcinogen, and as an endocrine disruptor.  Continued research since 1972 has only confirmed that DDT poses unknown, but most likely significant threats to human health.  No study has ever been done that found DDT to be safe to humans.
  10. Use of DDT — or rather, overuse of DDT — frequently has led to more malaria. DDT forces rapid evolution of mosquitoes.  They evolve defenses to the stuff, so that future generations are resistant or even totally immune to DDT.  Increasing DDT use often leads to an increase in malaria.
  11. Slandering the World Health Organization (WHO), Rachel Carson, the thousands of physicians in Africa and Asia who fight malaria, or environmentalists who have exposed the dangers of DDT, does nothing to help save anyone from malaria.

Tren and Roberts have a new book out, a history of DDT.  I suspect that much of the good they have to say about DDT is true and accurate.  Their distortions of history, and their refusal to look at the mountain of science evidence that warns of DDT’s dangers is all the more puzzling.

No world class journal should allow such an ill-researched piece to appear, even as an opinion.  Somebody should have done some fact checking, and made those corrections before the piece hit publication.

Full text of the WSJ piece below the fold.

Read the rest of this entry »