They are bracing for a brutal season, driven by a new and alarming variant that is expected to circulate widely.

The mutation, known as subclade K, has already caused a surge in flu cases in Australia, Canada, Japan, and the U.K.

The A H3N2 type of influenza virus, notorious over the years for leading to hospitalizations and deaths among older people, is showing up most so far this flu season. The Oregon Health Authority ...

Wastewater testing shows high concentrations of the virus in Silicon Valley, San Francisco and Vallejo. But public health ...

A new version of the common flu is spreading globally. Virus evolutions are normal, and this one is not necessarily believed ...

A new version of the common flu is spreading globally, and health officials are monitoring this evolving strain of influenza ...

The level of flu varies by state. But overall, more people have recently tested positive for influenza, with flu-related ...

Bloomington’s wastewater levels show a high concentration of SARS-CoV-2, an indicator of COVID-19, according to ...

Known as subclade K, a new, mutated flu strain that has dominated in Europe and Asia is now rapidly spreading across the US.