6 days ago · While rare, mammals can be infected with highly pathogenic avian influenza (HPAI) A (H5N1) ("H5N1 bird flu") viruses. Reports of these sporadic infections in mammals have occurred globally amid widespread outbreaks of bird flu infections in wild birds and poultry.

2 days ago · H5 bird flu is widespread in wild birds worldwide and is causing outbreaks in poultry and U.S. dairy cows with several recent human cases in U.S. dairy and poultry workers. While the current public health risk is low, CDC is watching the situation carefully and working with states to monitor people with animal exposures.

5 days ago · Cow infections led to 40 of the 67 confirmed human cases of highly pathogenic avian influenza in the United States since early 2024, according to the U.S. Centers for Disease Control and...

5 days ago · Deadly strain of bird flu linked to man's 2024 death appears in Nevada dairy cows 02:38. At least four cattle herds in Nevada have tested positive for a strain of H5N1 bird flu never before seen ...

6 days ago · A version of the H5N1 bird flu virus known as B3.13 was confirmed in March after being introduced to cattle in late 2023, scientists said. It has infected more than 950 herds in 16 states. The new version, known as D1.1, was confirmed in …

6 days ago · The virus that has been spreading through the nation’s dairies is a version of H5N1 known as B3.13, which has infected more than 950 herds in 16 states. Scientists believe that it initially ...

Feb 5, 2025 · Avian influenza virus type A (H5N1) has been confirmed in dairy cattle in 16 states: 735 herds in California, 64 in Colorado, 35 in Idaho, 30 in Michigan, 27 in Texas, 13 each in Iowa and Utah, nine each in Minnesota and New Mexico, seven in South Dakota, five in Nevada, four in Kansas, two in Oklahoma, and one each in North Carolina, Ohio, and ...

Jan 17, 2025 · The USDA, the FDA, and the CDC, along with state partners, continue to investigate an outbreak of Avian Influenza A (H5N1) impacting poultry, dairy cows, and people in multiple states.

Nov 26, 2024 · Outbreaks of H5N1 continue to rise in dairy cattle and poultry, as well as in other wild and domesticated animals, including the first confirmed infection in a pig. Human cases also continue to occur, primarily—but not exclusively—in people who had exposure to …

Apr 8, 2024 · The H5N1 strain of avian influenza has been found in dairy cows, raising concerns among scientists about what the spillover could mean for humans—and whether the virus has pandemic potential.