Zika virus infection: WHO warns Zika virus outbreak likely to spread across Americas

The Zika virus was first detected in Brazil in May 2015 and has since spread across the Americas. It is transmitted by Aedes mosquitoes and linked to birth defects like microcephaly. Brazil and other countries have advised women to delay pregnancies. The virus originated in Uganda in 1947 and spread to Southeast Asia and French Polynesia before reaching Brazil in 2014.

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