When the H5N1 outbreak accelerated in October 2025, few anticipated how swiftly it would reshape global food systems. Within ...

An ongoing outbreak of highly pathogenic avian influenza has affected more than 184 million domestic poultry since 2022 and, ...

A new warning from global health experts is raising alarms about the potential for a bird flu pandemic that could outpace the ...

Bird flu, or H5N1, has touched most of the globe, but there is one spot it hasn't reached. Researchers down under are preparing for it, but gaps in bird flu surveillance elsewhere makes it difficult.

The Pan American Health Organization (PAHO) reported that avian influenza A (H5N1) continues to circulate in the Americas, ...

Further cases of highly pathogenic avian influenza have been confirmed in commercial poultry in Japan and South Korea, as the ...

A Hawaiian monk seal swims in a pool after receiving a bird flu vaccine at Ke Kai Ola in Kailua-Kona. The endangered Hawaiian ...

Helen Branswell covers issues broadly related to infectious diseases, including outbreaks, preparedness, research, and vaccine development. Follow her on Mastodon and Bluesky. You can reach Helen on ...

A third case of mammal-to-human transmission of the highly pathogenic H5N1 bird flu virus has been reported in the United States. This latest case, involving a dairy worker in Michigan, raises ...

The bird flu (avian H5N1 influenza) has been circulating widely in cattle and other mammals. Many researchers note that there is a risk of a human pandemic. Some studies suggest that older humans are ...

Los Angeles County health officials are investigating a case of three cats presumed to have H5N1 bird flu County officials confirmed the disease in two other cats who drank recalled raw milk and died ...