An Aedes aegypti mosquito sits inside a glass tube in May at the Fiocruz Institute in Puerto Rico, where they have been screening for mosquitos naturally infected with the Zika virus in Rio de Janeiro, Brazil.
An Aedes aegypti mosquito sits inside a glass tube in May at the Fiocruz Institute in Puerto Rico, where they have been screening for mosquitos naturally infected with the Zika virus in Rio de Janeiro, Brazil. Felipe Dana AP
An Aedes aegypti mosquito sits inside a glass tube in May at the Fiocruz Institute in Puerto Rico, where they have been screening for mosquitos naturally infected with the Zika virus in Rio de Janeiro, Brazil. Felipe Dana AP