The Zika virus and the Olympic Games (http://www.rivm.nl/)

It will be winter in Brazil when the Olympic Games 2016 take place. So it will be cool with few mosquitoes at the main locations where the events take place (Rio de Janeiro and environs). Hence the risk of contamination with the Zika virus is low. Some football matches will be played in the Amazon area (Manaus), where conditions will be much warmer, and consequently the risk of contracting a tropical disease, including the Zika virus, will be higher.

http://www.rivm.nl/