Bird flu is back with a vengeance. Medical experts have discovered that one variant of the avian flu virus, dubbed H3N8, has undergone several mutations and can now cause more severe infections.
Researchers at the US Centers for Disease Control and Prevention (CDC) have identified a few instances of asymptomatic human infection with avian influenza A (H5N1) virus. Widespread in wild birds ...
Two people sharing a home caught the virus without known exposure to animals. More than 30 human cases have been reported in the United States. By Apoorva Mandavilli and Emily Anthes A Missouri ...
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