A health agent carries a bucket of guppy fish to place them in standing water to consume larva of Zika-transmitting mosquitoes in an empty lot of Rio de Janeiro's Tijuca neighborhood, Brazil, February 17, 2016.
© 2016 Reuters
A health agent carries a bucket of guppy fish to place them in standing water to consume larva of Zika-transmitting mosquitoes in an empty lot of Rio de Janeiro's Tijuca neighborhood, Brazil, February 17, 2016.