Zika

In this Jan. 26, 2016 photo, a municipal worker gestures during an operation to combat the Aedes aegypti mosquitoes that transmits the Zika virus in Recife, Pernambuco state, Brazil, Tuesday. Brazil’s health minister Marcelo Castro says the country is sending some 220,000 troops to battle the mosquito blamed for spreading a virus suspected of causing birth defects, but he also says the war is already being lost. (AP Photo/Felipe Dana)