Really? Let me give you some examples.
In Sri Lanka, in 1948, there were 2.8 million malaria cases and 7,300 malaria deaths. That year, Sri Lanka started spraying DDT. Malaria cases immediately began to drop. By 1963, there were only 17 cases of malaria and NO deaths. Then Sri Lanka suspended spraying of DDT, and in 1968 and 1969 there were 2.5 million cases of malaria again.
in Zanzibar, 70 percent of the population in 1958 contracted malaria. Zanzibar began spraying, and malaria cases dropped to 5 percent of the population. In 1968 Zanzibar suspended spraying, and infection rates climbed back up to 50-60%.
Some environmentalists claim, with little evidence, that DDT spraying was stopped not because of DDT scare, but because of resistance to the chemical by mosquitos. While it’s clear that new strains did develop somewhat of a resistance, it was not total, and DDT was still very effective when it was banned.
For example, after South Africa stopped using DDT in 1996, the number of malaria cases in KwaZulu-Natal province went from 8,000 to 42,000. By 2000, there had been an approximate 400 percent increase in malaria deaths. Then DDT spraying was started again, and by 2003 there was not a single case of malaria reported.
As for all the supposed risks to humans of DDT, here’s what the experts have to say:
“There is no scientific evidence supporting a link between the proper application of pesticides and any ill health effects in humans. Moreover, there is no evidence that the approved use of pesticides contributes in any way to human cancer.” – Lawrence Garfinkel, Director of Cancer Prevention, American Cancer Society
“The risk of pesticide residues to consumers is effectively zero. This is what some fourteen scientific societies representing over 100,000 microbiologists, toxicologists and food scientists said at the time of the ridiculous Alar scare. But we were ignored.” – Dr. Sanford Miller, Dean of the Graduate School of Biomedical Sciences, University of Texas at San Antonio
And here’s an excellent middle-of-the-road letter from the Malaria Foundation on DDT.
I don’t think there can be any question that the widespread banning of DDT use in the 60’s after the publication of Silent Spring and the resulting anti-DDT hysteria cost millions of lives.