BRASILIA (Reuters) - Brazil's top health official said on Monday that the Zika virus outbreak is proving to be worse than believed because most cases show no symptoms, but improved testing should ...

Add Yahoo as a preferred source to see more of our stories on Google. A new Zika vaccine from Brazil shields the brain and testicles, avoids dengue confusion, and could reshape prevention strategies ...

In Brazil, there's a massive study underway to learn more about the Zika virus. The mosquito-borne disease has fueled a health crisis in the country. Since November, nearly 4,200 babies have been born ...

The Zika virus has probably been circulating quietly and undetected in Brazil since 2013, a new genetic study shows. A large international team of experts used a "genetic clock" to show Zika virus has ...

A baby in Brazil who became infected with Zika in the womb still had the virus in his body for months after he was born, according to a new report of the case. The baby's mother, who lived in São ...

As the Zika virus continues to spread through Brazil, one physician is using virtual visits to meet the increased demand for healthcare services, especially in more rural parts of the country, reports ...

Brazilian Health Ministry on Friday denied withholding Zika virus samples, saying it was willing to share related samples and information with foreign institutions that hope to study the virus.

BRASILIA (Reuters) - World Health Organization (WHO) Director General Margaret Chan said on Tuesday Brazil is doing a good job tackling the Zika virus and ensuring that the Olympic games it will host ...

Cases of the virus, which is spread by mosquitoes, have boomed in recent months, with infected patients typically suffering symptoms including fevers, rashes, joint pain and conjunctivitis. Pregnant ...

The rare birth defect is associated with the mosquito-borne Zika virus. — -- At the center of the Zika virus crisis is the rise of a dangerous condition called microcephaly. The rare birth defect ...

Brazil's top health official said on Monday that the Zika virus outbreak is proving to be worse than believed because most cases show no symptoms, but improved testing should allow the country to get ...