Wastewater in several Californian cities, including San Francisco and Los Angeles, recently tested positive for bird flu. But ...

Warsaw wants 95% of children and adolescents vaccinated against polio following detection of a mutated polio virus in ...

"Very high" levels of the virus were detected in New Mexico, with "high" levels in Arizona, Kentucky, Minnesota, Oklahoma, ...

State health officials are investigating possible sources of the H5 avian influenza virus detected for the first time in a ...