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.

6 days ago · A genotype of avian influenza type A H5N1 mostly found in wild birds and poultry has now been discovered in dairy cattle. On January 31, the U.S. Department of Agriculture (USDA) Animal and Plant Health Inspection Service’s (APHIS) National Veterinary Services Laboratories (NVSL) confirmed by whole genome sequence the first detection of H5N1 clade 2.3.4.4b, …

6 days ago · Dairy cattle in Nevada have been infected with a new type of bird flu that’s different from the version that has spread in U.S. herds since last year, Agriculture Department officials said Wednesday. The detection indicates that distinct forms of the virus known as Type A H5N1 have spilled over from wild birds into cattle at least twice.

Feb 5, 2025 · Highly pathogenic avian influenza (HPAI) was identified in U.S. dairy cattle for the first time in March 2024. Here are important details.

Oct 15, 2024 · Highly pathogenic avian influenza (HPAI) H5N1 haemagglutinin clade 2.3.4.4b was detected in the USA in 2021. These HPAI viruses caused mortality events in poultry, wild birds and wild mammals....

Since late March 2024, the U.S. Department of Agriculture, Food and Drug Administration, Centers for Disease Control and Prevention, and state veterinary and public health officials have been investigating the detection of highly pathogenic avian influenza in dairy cows, with one human infection.

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.

Jun 8, 2024 · On March 25, 2024, USDA announced unpasteurized, clinical samples of milk from sick cattle collected from two dairy farms in Kansas and one in Texas, as well as an oropharyngeal swab from another dairy in Texas, have tested positive for highly pathogenic avian influenza (HPAI).

May 3, 2024 · A highly pathogenic avian influenza A(H5N1) virus infection was identified in a dairy farm worker in Texas. This pathogen has been reported in multiple dairy herds in several states.

May 24, 2024 · In late March 2024, highly pathogenic avian influenza virus (HPAI) of the H5N1 subtype was for the first time detected in nasal swabs and milk of dairy cows, increasing concern that HPAI...