Historically, human H5N1 infections were sporadic and always related to exposure to infected poultry. As of November 2024, more than 900 human cases in 24 countries had been reported, with ...

The ongoing surge of clade 2.3.4.4b H5N1 viruses in avian species has resulted in numerous spillover events into mammalian species including dairy cows and humans, ... Severe Respiratory Disease in ...

Mexico, Chile and Uruguay halt poultry imports from Brazil after bird flu outbreak ... Although most of the H5N1 samples have been handled by the state public health laboratory system, ...

Confirmation of the first H5N1 bird flu infection of a backyard flock in San Mateo County on Feb. 4, ... Mexico, Chile and Uruguay halt poultry imports from Brazil after bird flu outbreak ...

USDA milk testing shows different strain of H5N1 bird flu in Nevada dairy herds. But alone, they dismiss an outsized advantage we possess over bird flu — one that is greater, arguably, than our ...

Although those vaccine materials were designed using versions of H5N1 flu from the early 2000s, a recent study suggests that they create an antibody response to the newer 2.3.4.4b versions that ...

H5N1 has been the dominant grouping of strains fueling this past year's outbreaks in the U.S., with different variants of that virus spreading in wild birds, poultry flocks, dairy cattle, pets and ...

Bird flu, also known as H5N1, has been around for decades. But the discovery in 2024 that the virus spread from wild birds to cows came as a surprise to public health experts, according to officials .

H5N1 bird flu is likely infecting more people than we know. New research from the Centers for Disease Control and Prevention shows that 7% of monitored dairy farmers in Michigan and Colorado have ...

Experts believe three more cats in Los Angeles County have been infected with H5N1 bird flu. Two others succumbed to the disease earlier this month after drinking recalled raw milk from Fresno ...

In two recent interviews on Fox News, HHS Secretary Robert F. Kennedy Jr. downplayed concerns about H5N1 avian influenza in the U.S., raising alarm among public health and infectious disease ...

Experts warn about the possibility of a new pandemic in 2025 as the H5N1 bird flu virus spreads across all 50 states, impacting US dairy farms and leading to human infections. Here's what to know.