Health officials were struggling to answer a broader and potentially worrisome question: how the infection occurred.
A Canadian teenager is currently in critical condition after contracting a suspected case of H5N1 bird flu, a British ...
MISSOULA — Millions of birds across the United States have been impacted by avian influenza, also known as the bird flu, ...
It's not clear how the British Columbia teenager picked up the virus, which has been detected recently in wild birds and ...