Subsequently, sporadic human infections were reported in Africa and Asia, and the first documented ZIKV outbreak was reported from Yap State, Federated States of Micronesia in 2007.
The Asian lineage of the virus reappeared in French Polynesia in October 2013, and thereafter between November 2013 and February 2014, with an increased incidence of neurological complications, including 42 cases of Guillain-Barré syndrome; these complications were a unique and worrisome feature of the outbreak that warrants further study.
ZIKV disease is generally reported with characteristics of acute febrile illnesses that clinically resembles dengue fever. The most common symptoms are fever, joint pain, rashes, and conjunctivitis, with symptoms lasting from several days to a week.