The Mayaro River in Trinidad. The Mayaro virus was first identified in forest workers on the island. Jamieson Ramkissoon/Flickr hide caption
mosquito-borne diseases
Larry Smart, a Miami-Dade County mosquito control inspector, uses a fogger to spray pesticide to kill mosquitoes in an effort to stop a possible Zika outbreak in Miami. Joe Raedle/Getty Images hide caption
Miami Steps Up Mosquito Control Efforts After Suspected Zika Cases
Zika virus particles (colored purple in this scan) infecting cells. Each particle is about 40 nanometers in diameter. CDC/Smith Collection/Gado/Getty Images hide caption
A Case Of Zika Apparently Spread From A Patient To A Family Caregiver
People walk past graffiti art in the Providencia community of Rio, a favela that dates back to 1897. Mario Tama/Getty Images hide caption