For the first time, confirmation of the deadly H5N1 virus has been detected in California's elephant seal population.

A little-known virus that causes nasty flu-like symptoms is spreading in California — and it doesn’t have a vaccine. Cases of human metapneumovirus (HMPV) have been steadily rising since winter began, ...

A respiratory virus without a specific treatment or vaccine is surging in several states across the U.S. Here's what we know ...

Human metapneumovirus, or HMPV, typically spreads during winter and spring.

A terrifying outbreak of highly pathogenic avian influenza (HPAI) is ripping through California’s Bay Area, leaving a trail ...

A presumptive positive case of the deadly avian flu first detected at Año Nuevo State Park last month, which spread to marine ...

Human metapneumovirus, a little-known respiratory virus, is circulating in Northern California as flu and COVID cases decline.

Every winter, like clockwork, respiratory viruses spread across the country: respiratory syncytial virus, commonly known as ...

The Republican opening for California governor, a virus with no treatment is hitting California and more big stories ...

Scientists estimate more than 60 marine mammals may have been infected by the virus.

"We are starting to see some carcasses on public beaches." ...

It's not COVID-19 or the flu, but a respiratory virus has been hammering Northern California cities, including Sacramento and ...