Vue lecture

An Invasive Mosquito Is Spreading With Alarming Speed, Threatening Africa’s Cities

The malaria-carrying mosquito is resistant to all insecticides. Scientists are scrambling to find ways to blunt the risk.

© Mahaman Lamine

An Anopheles stephensi mosquito under a microscope in the lab of the parasitologist Mahaman Lamine in Niger.
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With Hopes High for New H.I.V. Prevention Pill, Merck Takes Steps to Ensure Access

Companies in Africa and India will make generic versions of the pill that could cost as little as $5 per person per year. But access to the drug and other new products in much of Latin America remains uncertain.

© Arlette Bashizi for The New York Times

Health workers speaking with students about H.I.V. prevention drugs at the University of Zambia in Lusaka in March.
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