Photo: File

Bird flu spreads to California dairy cows

Cows at three dairy farms in California tested positive for H5N1 bird flu at the end of August, marking an expansion of the virus into the largest dairy producing region of the United States, according to an announcement from the state’s agriculture department. More than 190 herds have been infected across the U.S. since March,




Photos: Deimagine/Getty Images

US undercounts bird flu in cattle as farmers shun testing

Farmers fear economic losses from positive tests, leading to under-reporting; USDA offers partial compensation

The U.S. bird-flu outbreak in dairy cattle is much larger than official figures suggest due to farmers' reluctance to test their animals and risk the economic consequences of a positive result, according to Reuters interviews with dairy experts, veterinarians, and farmers in six states with known cases.





A person holds a test tube labelled “Bird Flu”, in this picture illustration, January 14, 2023. REUTERS/Dado Ruvic/Illustration/File Photo

US to spend $10 million to curb bird flu in farm workers

CDC plans vaccine push; says risk to general public remains low

The U.S. Centers for Disease Control and Prevention said on Tuesday it plans to spend $10 million to curb farm worker bird flu infections, including $5 million for seasonal flu vaccines, as part of its efforts to avoid further spread and mutation of the virus.

To date, 169 dairy herds have been affected by avian influenza in the U.S.  Photo: Thinkstock

Light shed on bird flu spread in mammals

Researchers from Cornell University have determined how cows infected with H5N1 bird flu were able to spread the virus to other cows and mammals. In the study published in the journal Nature on July 24, scientists used genomic data, computer modeling, and data about the virus’s spread to show how infected cows from Texas spread bird flu