25 May 2017: Zika - Epidemiological Update

To date, 48 countries and territories in the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease, while five countries have reported sexually transmitted Zika cases. Since epidemiological week (EW) 44 of 2016, no additional countries or territories of the Americas have confirmed autochthonous, vector-borne transmission of Zika virus disease.

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