The San Francisco Department of Public Health announced the first two flu-related deaths recorded in the city this respiratory virus season Friday. SFDPH is encouraging the ...

Proteins and genetic material from H5N1 influenza viruses have been found in pasteurized milk in the United States, but a study from St. Jude Children's Research Hospital shows those inactive viral ...

Federal health officials are warning that certain lots of raw cat food may be contaminated with H5N1 bird flu after a pet cat in San Francisco that ate the food became infected with the virus and had ...

Four years ago, as attention locked onto COVID-19, another virus began circling the globe. A major outbreak of a new strain of bird flu—formally named influenza A virus subtype H5N1—has since killed ...