In the announcement of the decision Director of WHO's Global Malaria Programme Dr Arata Kochi says: "We must take a position based on the science and the data. One of the best tools we have against malaria is indoor residual house spraying. Of the dozen insecticides WHO has approved as safe for house spraying, the most effective is DDT." Full details of WHO decision on DDT...
More on Malaria:
How to Avoid Malaria when visting Africa (Africa for Visitors)
Rachel Carson's and her DDT Expose Silent Spring
Malaria FAQ (Roll Back Malaria Campaign)