Zika sex research begins despite U.S. Congress funding impasse

Aedes aegypti mosquitoes are seen inside Oxitec laboratory in Campinas, BrazilIt could take years to learn how long men infected with Zika are capable of sexually transmitting the virus, which can cause crippling birth defects and other serious neurological disorders. In the meantime, health officials have warned couples to refrain from unprotected sex for six months after a male partner is infected. The extraordinary recommendation, based on a single report of Zika surviving 62 days in semen, could affect millions.

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