On Monday, director general of the World Health Organization Dr. Margaret Chan declared the mosquito-borne Zika virus to be an international public health emergency. Chan made a particular point of ...

The Zika virus is spreading through the Americas and is suspected to be causing babies to be born with tiny heads (and less developed brains).

The Zika virus epidemic that began in Brazil in 2015 and quickly spread to other countries caused an unprecedented flood of neurological disease, especially among infants, and changed the perception ...

Ten years ago, the Zika virus shook Brazil. Thousands of babies were born with severe birth defects. Pregnant women faced constant fear, and public health systems scrambled for answers. While the ...

When a nasty bug infects a cell, the cell sends out riders called interferons that, like Paul Revere, warn the other cells: A virus is coming! A virus is coming! Interferons bind to receptors on the ...

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 ...