Mosquitos with West Nile Virus have spread to more than half the counties in Pennsylvania, the state’s Department of ...

The CDC declared the end of its emergency response to H5N1 avian flu as a health threat to humans, David Murray writes.

As authorities brace for a potential resurgence in bird flu cases this fall, infectious disease specialists warn that the Trump administration's crackdown on undocumented immigrants could hamper effor ...