The first major outbreak , with 185 confirmed cases , was reported in 2007 in the Yap Islands of the Federated States of Micronesia . A total of 108 cases were confirmed by PCR or serology and 72 additional cases were suspected . The most common symptoms were rash , fever , arthralgia , and conjunctivitis , and no deaths were reported . The mosquito '' Aedes hensilli '' , which was the predominant species identified in Yap during the outbreak , was probably the main vector of transmission . While the way of introduction of the virus on Yap Island remains uncertain , it is likely to have happened through introduction of infected mosquitoes or a human infected with a strain related to those in Southeast Asia . This was also the first time Zika fever had been reported outside Africa and Asia . Before the Yap Island outbreak , only 14 human cases had ever been reported
was reported in 2007
2007 Yap Islands Zika virus outbreak
Zika fever