Evidence mounted linking Zika to the birth defect microcephaly, and the United Nations health agency set a review of travel advice related to the outbreak of the virus while US officials planned strategy to control mosquitoes that spread it.

Three people dies in Venezuela from complications linked to Zika, says President Nicolas Maduro.

One of the US's most senior public health officials has revealed the "strongest evidence to date" of the effect on babies of the Zika virus.

Over 3,100 pregnant Colombian women are infected with the mosquito-borne Zika virus, President Juan Manuel Santos says.

The mosquito behind the Zika virus seems to operate like a heat-driven missile of disease. The hotter it gets, the better the mosquito that carries Zika virus is at transmitting its buffet of dangerous illnesses, scientists say.