Photo: REUTERS/Dado Ruvic/Illustration/File

Explainer: How U.S. states are testing for bird flu

States in the U.S. are playing a key role in the nation's response to a growing outbreak of avian flu among dairy cattle that has also infected a small number of humans. The states are chiefly responsible for testing cows and people for the virus, but they take different approaches. Scientists tracking bird flu are increasingly concerned that current surveillance efforts are not sufficient.




(John Greig photo)

Colorado reports human case of bird flu

Dairy farm worker had mild symptoms and recovered after antiviral treatment

Public health officials in Colorado on Wednesday announced an adult man had tested positive for avian flu after reporting mild symptoms, including conjunctivitis, or pink eye.