1st discovered in forest monkeys in Zika Forest of Uganda, Africa in 1947
virus 1st detected in a human in 1968 in Nigeria although human cases occurred in Africa at least from 1951
in 2007, it spread outside of Africa and infected nearly three-quarters of Yap Island's 11,000 residents in Micronesia
in 2013, Zika showed up in Tahiti and other parts of French Polynesia and was responsible for making an estimated 28,000 people so ill they sought medical care
arrived in Brazil in May 2015
in Dec 2015, cases developed in West African nation of Cape Verde and in Panama and Honduras
in Jan 2016, major public warnings for much of America except Canada and Chile as the virus rapidly spreads through 23 countries and expected to infect millions