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How much DDT would help with the Zika virus?

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With no treatment or vaccine available, use of the DDT -- illegal in the United States for more than 40 years -- has been mentioned as a way to combat the Zika virus. read more

DDT was of great value in dramatically reducing the abundance of the anopheline vectors of malaria in the 1950s, until selection pressure resulted in a dramatic rise in insecticide resistance in the mosquito population. read more

While malaria dwarfs Zika as a public health concern, officials want to stymie its spread and met Monday to discuss ways to counter the virus. The World Health Organization (WHO) has declared a global emergency as the virus spreads across Latin America. read more

In response to the Zika virus threat, predictably the same group of anti-environmentalists are urging that we bring back DDT and "Spray, baby, spray!" To make their questionable case, they overstate the benefits of DDT, downplay its risks, and engage in some major historical revisionism regarding the legacy of Rachel Carson. read more

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