3 days ago · Common clinical signs in affected cows include low appetite, reduced milk production, and abnormal appearance of milk (thickened, discolored). Lactating cows have been most highly affected, and signs of illness have been …

6 days ago · A multistate outbreak of HPAI A(H5N1) bird flu in dairy cows was first reported on March 25, 2024. This is the first time that these bird flu viruses had been found in cows. In the United States, since 2022, USDA APHIS has reported HPAI A(H5N1) virus detections in more than 200 mammals.

3 hours ago · “I always thought one bird-to-cow transmission was a very rare event. Seems that may not be the case,” said Richard Webby, an influenza expert at St. Jude Children’s Research Hospital. 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.

6 hours ago · Dairy cows in Nevada have been infected with a new form of bird flu that is distinct from the version that has been spreading through herds over the last year, the U.S. Department of Agriculture ...

7 hours ago · The US Department of Agriculture (USDA) Animal and Plant Health Inspection Service (APHIS) today announced a new spillover of H5N1 avian flu to dairy cattle, which involves the D1.1 genotype currently circulating in wild birds and has been implicated in human infections, including the fatal case in a Louisiana resident who had contact with sick backyard birds.

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.

May 7, 2024 · Symptoms can mimic regular flu (fever, cough, sore throat, runny nose, body aches, shortness of breath). In the most recent Texas case, the dairy farm worker’s symptoms were confined to the eyes and were incorrectly reported as mild conjunctivitis. Pain, subconjunctival hemorrhage and serous drainage were symptoms noted upon exam.

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 29, 2024 · Cows showing symptoms have fever, loss of appetite, and decreased milk production, but some are potentially asymptomatic, and those positive cases are therefore going unnoticed.

Apr 1, 2024 · For the first time, cows at dairy farms across the U.S. have tested positive for avian flu. The virus is believed to have spread to at least five states. The following Cornell University experts are available to discuss impacts and precautions.