A health worker sprays insecticide in Rio de Janeiro, Brazil, to combat the Aedes aegypti mosquito, which transmits the Zika virus.
A health worker sprays insecticide in Rio de Janeiro, Brazil, to combat the Aedes aegypti mosquito, which transmits the Zika virus. Leo Correa AP file photo
A health worker sprays insecticide in Rio de Janeiro, Brazil, to combat the Aedes aegypti mosquito, which transmits the Zika virus. Leo Correa AP file photo