Historic Deltoid: Indur Goklany on DDT, corrections from Tim Lambert

April 10, 2018

I’ll have to beg forgiveness from Tim Lambert, but in the interest of accuracy and good history, I have captured below the post Tim Lambert had on the old Deltoid blog (at the Seed Science Blogs site), dealing with Indur Goklany’s errors on DDT.

A bit of other history: Anthony Watts despises my posts (me, too, probably) and I am banned from his site for various sins including calling him out for suggesting Rachel Carson and President John F. Kennedy had more than an occasional handshake personal relationship (a bizarre charge Christopher Monckton repeats and exaggerates on in slightly different ways). Watts and I disagree on what we should regard as facts; I take the old collegiate debate and Scout Law positions, he sides with the Heartland Institute parody/comedy/hoax troupe.

Watts was having none of my corrections. Tim Lambert, who has researched this particular area of pro-DDT hoaxing more than anyone else, was kind enough to respond.

This is borrowed from the Internet Archive’s Wayback Machine, until, and then maybe a supplement to, the reappearance of Deltoid’s archives at the new site. As of April 10, 2018, I have not checked the links. If links don’t work, please tell me in comments, and I’ll work to get a new link to the old information where possible.

You should also know that Sri Lanka today is certified to be malaria-free, without DDT.

Below, Tim Lambert’s post on Indur Goklany’s errors about DDT history:

 

Indur Goklany, DDT and Malaria

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Ed Darrell points to a WUWT post by Indur Goklany which promotes the use of DDT to fight malaria instead of more effective measures. As with most of the DDT promoters, Goklany carefully avoids mentioning the way mosquitoes evolve resistance to insecticides. For example, here’s what he has on Sri Lanka:

For instance, malaria incidences in Sri Lanka (Ceylon) dropped from 2.8 million in the 1940s to less than 20 in 1963 (WHO 1999a, Whelan 1992). DDT spraying was stopped in 1964, and by 1969 the number of cases had grown to 2.5 million.

Now compare this with what really happened in Sri Lanka:

With widespread resistance of A. culicifacies to DDT, malathion spraying was introduced in 1975 in areas of P.falciparum transmission affording protection to nearly one million people. Towards the end of 1976 DDT spraying was completely discontinued and during 1977 exclusively malathion was used as an adulticide.

i-888470655207729222fb0f61fe5fa18a-oth_mal_cases_srl60-08.png

Note that the scale for malaria cases is logarithmic, so there was a factor of ten reduction in the number of cases in a few years after DDT spraying was discontinued.

The misinformation about DDT and malaria that Goklany spreads is harmful and could kill people. DDT still has a place in the fight against malaria (because of insecticide resistance we need as many different insecticides as possible), but there are more effective means available, and by trying to undercut the use of the best methods for fighting malaria, Goklany will be responsible for people dying from malaria.

[End, quote from Tim Lambert’s old Deltoid blog]

Now, is it possible that the comments will copy as well as the blog post? There are some good ones in there.

Here’s a try at copying the comments, below the fold.

 

Read the rest of this entry »


Sri Lanka declared malaria-free, without DDT

March 6, 2018

Chart from the India Foundation shows the ups and downs of fighting malaria in Sri Lanka in the 20th and 21st centuries. Sri Lanka is malaria-free since 2016.
Chart from the India Foundation shows the ups and downs of fighting malaria in Sri Lanka in the 20th and 21st centuries. Sri Lanka is malaria-free since 2016.

Sri Lanka pushed malaria out of the country, and is certified by the World Health Organization (WHO) as malaria-free, as of September 2016.

If you follow the fight against malaria, this may not be news to  you. If you’re a victim of the pro-DDT, anti-WHO and anti-Rachel Carson hoaxes, you may be surprised.

Sri Lanka once got malaria to almost nothing, with heavy use of DDT in Indoor Residual Spraying. Then the budget hawks stopped the anti-malaria program (“Success!”) to save money. Malaria came roaring back as it will when vigilance relaxes — but by then the mosquitoes were mostly resistant to DDT, and a civil war kept the nation from mounting any public health campaigns in much of the country.

With the advent of new medicines, ABC therapy, and new methods to diagnose the disease, and using bednets and targeted pesticides other than DDT, Sri Lanka beat the disease. The news was carried in Britain’s The Guardian.

The World Health Organisation has certified that Sri Lanka is a malaria-free nation, in what it called a truly remarkable achievement.

WHO regional director Poonam Khetrapal Singh said in a statement that Sri Lanka had been among the most malaria-affected countries in the mid-20th century.

But, the WHO said, the country had begun an anti-malaria campaign that successfully targeted the mosquito-borne parasite that causes the disease, not just mosquitoes. Health education and effective surveillance also helped the campaign.

https://www.theguardian.com/society/2016/sep/05/sri-lanka-malaria-free-world-health-organisation

This is a blow to the anti-WHO pro-DDT forces. Sri Lanka has been a key story in their tales of how only DDT could fix malaria, stories told long after DDT stopped working. One more example shot down.

More:

Tip of the old scrub brush to The Guardian.


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