More recently, Zika was identified as having made it into North America in a case of one person in Texas passing it to another through sex, confirming concerns that the virus would, in fact, spread ...

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 ...

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 ...