Aedes aegypti mosquitoes are displayed at an exhibition on Jan. 28 in Brazil. The mosquitoes can be carriers of the Zika virus. Several cases of the virus have spread to Puerto Rico. Mario Tama/Getty Images hide caption
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Friday
This is a partial view of the tennis center at Olympic Park in Rio de Janeiro. The International Olympic Committee is sending an advisory to participants in the 2016 Summer Games on how to deal with the mosquito-borne Zika virus. Leo Correa/AP hide caption
Thursday
U.S. Health Agencies Intensify Fight Against Zika Virus
Wednesday
Brazilian soldiers go house to house as they attempt to eradicate the larvae of the mosquito that causes the Zika virus. Mario Tama/Getty Images hide caption
Thursday
Solange Ferreira bathes her son Jose Wesley, who was born with microcephaly, at their house in Poco Fundo, Pernambuco state, Brazil. The U.S. Centers for Disease Control and Prevention said Wednesday, Jan. 13, 2016, that it has found the strongest evidence so far of a possible link between a mosquito-borne virus and a surge of birth defects in Brazil. Felipe Dana/AP hide caption