Excerpt: Although DDT soon became synonymous with poison, the pesticide was an effective weapon in the fight against an infection that has killed—and continues to kill—more people than any other: malaria. By 1960, due largely to DDT, malaria had been eliminated from eleven countries, including the United States. As malaria rates went down, life expectancies went up; as did crop production, land values, and relative wealth. Probably no country benefited from DDT more than Nepal, where spraying began in 1960. At the time, more than two million Nepalese, mostly children, suffered from malaria. By 1968, the number was reduced to 2,500; and life expectancy increased from 28 to 42 years.
After DDT was banned, malaria reemerged across the globe:
• In India, between 1952 and 1962, DDT caused a decrease in annual malaria cases from 100 million to 60,000. By the late 1970s, no longer able to use DDT, the number of cases increased to 6 million.• In Sri Lanka, before the use of DDT, 2.8 million people suffered from malaria. When the spraying stopped, only 17 people suffered from the disease. Then, no longer able to use DDT, Sri Lanka suffered a massive malaria epidemic: 1.5 million people were infected by the parasite.• In South Africa, after DDT became unavailable, the number of malaria cases increased from 8,500 to 42,000 and malaria deaths from 22 to 320.