A virus that can cause a polio-like illness among children has been found in Bay Area wastewater as influenza cases spike.

Each year, seasonal flu sickens about 1 billion people worldwide and causes approximately 290,000 to 650,000 respiratory ...

Korea is grappling with a seasonal surge in type B influenza, with infection rates rising sharply among school-aged children ...

Avian flu strains tend to only affect birds, but the current outbreak has spread to cattle and – in rare cases – people. The ...

Rampant bird flu has torn across America’s livestock, sickened farm workers and resulted in the culling of millions of birds ...

The earlier than normal arrival of this year's flu season has doctors urging Australians to roll up their sleeves to get ...

which historically cause more severe illness and are more infectious than influenza B viruses. The H3N2 strain “tends to mutate frequently, making it harder for immune systems to recognize and r ...

Washington just had its deadliest flu season in over a decade. 388 Washingtonians died from the virus between late 2024 and early 2025, according to the Washington State Department of Health.