Timeline: Zika's origin and global spread

(Reuters) - The following timeline charts the origin and spread of the Zika virus from its discovery in Uganda nearly 70 years ago: 1947 - Scientists researching yellow fever in Uganda's Zika Forest isolate the virus in samples taken from a rhesus monkey 1948 - Virus recovered from Aedes africanus mosquito in the Zika forest 1952 - First human cases detected in Uganda and Tanzania 1954 - Virus found in young girl in Nigeria 1960s-1980s - Zika detected in mosquitoes and monkeys in band of countri