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WHO

ReliefWeb

The possibility that a mosquito bite during pregnancy could be linked to severe birth defects in newborns has alarmed the public and astonished scientists. Aedes aegypti, the principal mosquito species that transmits the Zika, dengue, and chikungunya viruses, has a number of breeding and behavioural quirks that make it extremely difficult to control. This article looks at conventional and new techniques for control and summarizes WHO guidance.