US EditionH5N1 Bird Flu Cases Have Slowed in Animals and People
- The H5N1 bird flu virus has spread to dairy farms and poultry flocks across the United States by May 2025.
- The virus spread from wild birds to poultry and was first detected in US dairy cows in March 2024, surprising experts monitoring the outbreak.
- Federal officials report over 1,000 infected herds in 17 states, more than 70 human cases with one death, and ongoing infections in hundreds of dairy cows.
- Experts emphasize that the virus's capacity to spread across both animal and human populations, along with ongoing genetic mutations, necessitates strengthened monitoring, enhanced biosecurity protocols, and accelerated vaccine development initiatives.
- Although there is currently no proof of the virus spreading directly between people, ongoing transmission among animal populations raises concerns about possible future changes that could complicate control efforts.
14 Articles
14 Articles
H5N1 Bird Flu Cases Have Slowed in Animals and People
(MedPage Today) -- Detections of H5N1 avian influenza have slowed in both animals and humans, but continued surveillance is warranted, CDC researchers said. In dairy cattle, cases surged over the fall and early winter but eased in January, while...
Bird flu is spreading to dairy farms in the Mountain West, but it isn't a concern for the public yet
Bird flu is spreading to dairy farms in our region, according to federal officials tracking the virus. It has been found on poultry farms and its spread to cattle is a new concern, but experts say the outbreaks are not currently a concern for the general public.
Covering the ongoing bird flu story as it unfolds
This story is the first in a four–part series. The next article will look at the history and background of bird flu, including H5N1 and provide key resources for reporting on this topic. It was challenging enough to cover the COVID-19 pandemic in real-time as it developed, but how do you cover an almost-it-could-happen-but-we-don’t-know-yet pandemic that might or might not ever come to fruition? That is the challenge health journalists face with…
Media Statement: Ways to Protect Yourself and Others Against the Avian Flu | The Windsor-Essex County Health Unit
Media Statement: Ways to Protect Yourself and Others Against the Avian Flu Issued: Tuesday, May 6, 2025 | 10:00 a.m. | Windsor and Essex County The following statement can be attributed to Dr. Mehdi Aloosh, the Medical Officer of Health for the Windsor-Essex County Health Unit (WECHU): “The WECHU is reminding our community that Avian Influenza continues to circulate among the bird population. With the change in seasons, birds are migrating back …
Study shows fatal spread of H5N1 virus from ferrets to suckling kits
The study demonstrates that H5N1 2.3.4.4b clade infection in lactating ferrets leads to mastitis-related disease and transmission to suckling pups, resulting in 100% mortality among the pups During 2020, the highly pathogenic avian influenza A(H5N1) virus of clade 2.3.4.4b emerged and rapidly spread across many parts of Africa, Asia, and Europe. In 2021-2022, the 2.3.4.4b … Continue reading Study shows fatal spread of H5N1 virus from ferrets to …
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