The illness is usually mild with symptoms lasting for several days to a week after being bitten by an infected mosquito. People usually don’t get sick enough to go to the hospital, and they very rarely die of Zika. For this reason, many people might not realize they have been infected. Once a person has been infected, he or she is likely to be protected from future infections. Read more:

http://www.who.int/mediacentre/factsheets/zika/en/

http://www.cdc.gov/zika/about/index.html