The CDC and WHO claim they are hard at work tracking 100 people that may have come in contact with the deadly MERS virus.
The spread of a puzzling respiratory virus in the Middle East and beyond is not a global health emergency despite a recent spike in cases, the World Health Organization said Wednesday.
An equine neurological disease caused by a virus has been confirmed in a horse from Northern Virginia.
The H7N9 strain of bird flu can spread among ferrets, and under certain conditions, could begin to do the same among humans.
A baby born with the AIDS virus appears to have been cured, scientists announced Sunday, describing the case of a child from Mississippi who’s now 2½ and has been off medication for about a year with no signs of infection.