Zika was first identified in the Zika Forest in Uganda in 1947. The virus was found in the blood of a captive sentinel rhesus monkey while researchers were surveilling Yellow Fever. The first human cases were formally identified by the presence of antibodies in 1952 in Kenya & Tanzania. The first major outbreak of human Zika occurred on the island of Yap in 2007. In 2015, Zika was confirmed to be in Brazil and in October, 2015, Brazil first reported the increase in microcephaly among infants later suspected to be due to the virus. The virus has changed from an endemic, mosquito-borne infection causing mild illness across equatorial Africa and Asia, to an infection causing, from 2007 onwards, large outbreaks, and from 2013 onwards, outbreaks linked with neurological disorders including Guillain-Barré syndrome and microcephaly across the Pacific region and the Americas. Zika has been found in 67 countries, internationally..

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