Three different ways of designing a vaccine have been shown to be completely protective against the Zika virus.

The World Health Organization (WHO) plays down concerns over the spread of the Zika virus, amid calls for the Rio Olympics to be postponed.

Global health officials are racing to better understand the Zika virus behind a major outbreak that began in Brazil last year and has since spread to many countries in the Americas.

France has detected its first sexually transmitted case of Zika in a woman whose partner had traveled to Brazil, the epicentre of an outbreak of the virus, a senior health official says.

The organising committee for the August Olympics in Rio de Janeiro said it will charge national delegations to have mosquito screens on athletes' rooms.

The head of the World Health Organization warns that the Zika outbreak would likely worsen before nations besieged by the mosquito-borne virus linked to thousands of birth defects in Brazil see relief.

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.

South American health ministers hold an emergency meeting on slowing the spread of the Zika virus, dubbed a "nightmare" by hard-hit Brazil, where it is blamed for brain damage in babies.

Densely packed slums, rampant mosquitoes and a history of rapidly spreading infections make Asia particularly vulnerable to the devastating Zika virus, posing a massive challenge for the region, health experts warn.

A rare case of the Zika virus being transmitted through sex, not a mosquito bite, has been reported in the US.

There is no chance that the Rio Olympics will be cancelled because of a Zika virus outbreak, Brazil says.

Risk for Zika virus infection in Bangladesh is low as the countries affected by the mosquito-borne disease are far away, experts says.

For scores of women in the epicenter of the Zika outbreak in Brazil, the joy of pregnancy has given way to fear.