Researchers are not just worried about the virus popping up on American farms. Other types are causing trouble around the ...

Colorado measles vaccination rates are falling behind other states, leading to a lower herd immunity among children.

A ferocious surge of flu cases is linked in part to a variant that has not been dominant in the past few years — resulting in ...

Among the most famous demonstrations of genetic mutations driving infection outcome is severe combined immunodeficiency (SCID ...

The latest federal data shows Florida is now in the top tier of “very high” flu activity. Here's the four reasons why.