Each of these recent cases was caused by a different strain of influenza virus. In each case, it was an animal virus, which should not normally have turned up in humans at all. Should stories like ...

Measles cases have doubled across Europe and are at the highest number for 25 years, with people in the UK warned about how ...

A new report from the Centers for Disease Control and Prevention suggests that house cats could contract the H5N1 bird flu virus from contact with their owners. Because the workers declined to be ...