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

H5N1 avian influenza, more commonly known as bird flu, has infected more than 100 million birds in the U.S. and almost 500 ...

A teenager in Canada is critically ill with the country's first human case of H5N1 bird flu. Health officials aren't sure how ...

A Canadian teenager is currently in critical condition after contracting a suspected case of H5N1 bird flu, a British ...

A teenager has been left in critical condition after contracting the first presumptive human case of avian influenza in ...

Canadian health officials have confirmed bird flu in a British Columbia teen. The Public Health Agency of Canada said ...

A Canadian teen is hospitalized in critical condition with what is believed to be bird flu. British Columbia health officials ...

Health officials were struggling to answer a broader and potentially worrisome question: how the infection occurred.

Following a CDC study showing bird flu exposure among dairy workers, health officials recommend increased testing and ...

Rising H5N1 bird flu cases in the U.S. prompted the CDC to study the virus in ferrets, revealing it may have the potential to ...

Investigations are underway after a teenager from British Columbia, now receiving care in hospital, was infected via an ...

The health agency now urges proactive testing and treatment for the virus among any workers who were exposed to H5N1.