Symptoms for influenza A and its subclade K variant are similar, and both are typically more serious than influenza B. They ...

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

The HPAI strain of avian flu is infecting and killing birds in Missouri and Kansas. Several cases have been reported around ...

Given the vomiting and diarrhea, the biggest risk with norovirus is dehydration, which can turn a short-term illness into a ...

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 ...

Pediatric doctors in San Antonio say 2025 brought a familiar post-COVID pattern: more childhood viruses emerging outside ...

Doctors say that so far, kids are hit hardest with the flu. The flu shot is helping keep them out of the hospital.

The death toll and economic damage associated with flu highlight its role as one of the most harmful viruses in history.

The Centers for Disease Control and Prevention (CDC) has recently issued Level 2 travel advisories for several countries ...

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

Quebecers are being urged to avoid unnecessary emergency-room visits amid what one infectious-disease doctor is calling a respiratory virus "maelstrom." ...

A newly identified virus–cell hybrid structure allows viruses to spread faster and more aggressively by hitching a ride on ...