Soldiers and municipal personnel participate in an operation to eradicate the Aedes aegypti mosquito, vector of the Dengue, Zika and Chukungunya viruses, in Salvador, Bahia, Brazil

Health agents from Sao Paulo's Public Health Ministry have a meeting before an operation to fight the Aedes aegypti mosquito, vector of the Zika, Dengue ans Chikungunya viruses, in Sao Paulo, Brazil

Brazilian army soldiers are briefed before an operation to fight the Aedes aegypti mosquito, vector of the Zika, Dengue ans Chikungunya viruses, in Sao Paulo, Brazil

Soldiers and a Health Ministry agent look for larvae of Aedes aegypti mosquito, vector of the Zika, Dengue ans Chikungunya viruses, during an operation to fight them in Sao Paulo, Brazil