Children enjoy chickens at a past Calaveras County Fair & Jumping Frog Jubilee. Bird flu in January 2025 prompted a ban on ...

Avian influenza A (H5N1) has mutated, so the symptoms of bird flu could change as more people get sick in 2025.

A variant of the virus caused disease in people in 1997, when there was a small but deadly outbreak in Hong Kong. Eighteen ...

Swine Flu' Strain Has Passed from Humans to Swine Nearly 400 Times Since 2009 July 27, 2023 — A new study of the strain of influenza A responsible for the 2009 H1N1 pandemic -- pdm09 -- shows ...

For influenza viruses, imperfection is a strength. They constantly mutate, producing new strains that challenge immune ...

The nation's first human death due to the bird flu occurred this month, the latest development in a global outbreak that, ...

At the same time, recent CDC data shows that seasonal influenza A is rising across the U.S. — specifically the H1N1 (swine flu) and H3N2 strains. While it may just seem like a tiny change in ...

Humans and pigs share many biological traits that can amplify the spread and evolution of viruses — with swine flu (H1N1) ...

Dry weather in Pakistan has led to a surge in seasonal flu and respiratory virus cases. NIH reports 5 COVID-19, 147 swine flu, and 511 seasonal flu cases in December and January, urging citizens to ...