A new strain called H3N2 subclade K has emerged, raising concerns that the body may not be able to fight it off as well.

A fast-moving “super flu” variant is driving a sharp rise in cases, raising fresh questions about how well this season’s ...

Health officials are warning people about a flu virus called H3N2 that is spreading in the United States and other countries ...

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

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

A new investigation published in JAMA examines how COVID-19 vaccination affects maternal and perinatal outcomes among ...

Doctors say a new H3N2 flu variant is behind rising cases in North Texas. Though the vaccine is a partial match, it still ...

Last year’s flu season was the roughest in nearly a decade. “We generally don’t have two bad flu seasons back to back,” said ...

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 ...

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