In March 2024, highly pathogenic avian influenza (HPAI) virus of A(H5N1) clade 2.3.4.4b was detected in mammalian livestock, mostly dairy cattle, in the United States and has now been reported in ...

Bird flu was nearly everywhere in the U.S.—in chickens, cows, pet cats and even humans. Cases have gone down, but experts ...

H5N1 highly pathogenic avian influenza (HPAI) was first detected in dairy cattle in Texas on March 25 and has since spread to several additional states. The Centers for Disease Control and ...

H5N1 avian influenza has long been a concerning virus. Since its discovery in 1996 in waterfowl, bird flu has occasionally ...

CDC’s existing influenza surveillance systems are well-equipped to rapidly detect cases of avian influenza A virus infection, including H5N1 virus, in people. Influenza virus detection assays, which ...

In March 2024, a highly pathogenic avian influenza (HPAI) virus of A(H5N1) clade 2.3.4.4b was identified in lactating dairy cow herds in the panhandle region of Texas. As of August 1, 2024, a ...

Study highlights the spread of the highly pathogenic avian influenza A (H5N1) virus among non-domesticated animals in the U.S., revealing neurological symptoms as a key clinical presentation and ...

A strain of H5N1 avian influenza virus found in a Texas dairy worker who was infected this spring was able to spread among ferrets through the air, although inefficiently, and killed 100% of ...

Experts warn about the possibility of a new pandemic in 2025 as the H5N1 bird flu virus spreads across all 50 states, impacting US dairy farms and leading to human infections. Here's what to know.

Los Angeles County health officials have identified three more cats with presumptive H5N1; the source of the virus has not yet determined, but experts suspect raw meat.