Editor’s note: Dr. Vincent Resh of the University of California at Berkeley addressed the distinguished, long-lived Commonwealth Club of San Francisco on August 22, 2007. Below is a column by Resh which appeared in the San Francisco Chronicle a few days before the speech, covering much of the same material.
Resh tells the story of a public health victory in Africa against a disease called river blindness. People victimized are made blind by a parasitic worm which lives in the victim’s eyes. I relate it here because Resh tells how the victory is achieved without resorting to the use of destructive DDT, which had been proposed. Note carefully what Resh says about DDT. This is one more chunk of evidence against the broadcast use of DDT, a story in support of the ban on DDT imposed in the U.S. since 1972. Rachel Carson was right.
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- Vincent H. Resh has been a professor of entomology at UC Berkeley since 1975. He was the senior environmental adviser for the onchocerciasis control program.
This article appeared on page E – 5 of the San Francisco Chronicle.
River blindness ‘curse’ lifted
Sunday, August 19, 2007
Insect-transmitted diseases typically come to our attention through local news reports of the threat of West Nile virus or of dengue fever in our neighborhoods. The works of the Gates Foundation have made us more aware of malaria, the mosquito-transmitted disease that kills well more than a million people each year. But there are scores of insect-transmitted diseases that affect humans, and the insects responsible for many of them live in water.
Click on thumbnail image for a chart showing the life cycle of river blindness — from the Carter Center, by Alberto Cuadra
DDT and its descendents were initially effective in controlling the water-dwelling vectors of human diseases. However, the effects of these insecticides on environmental health also had significant, indirect effects on human health. The fish in rivers, which are the main protein source for humans in most developing countries, were drastically reduced by these poisons.
Posted by Ed Darrell 
Millard Fillmore's Bathtub 