Avian influenza is “evolving in ways we haven’t seen before,” says Martha Nelson, a computational biologist and staff scientist researching pathogen evolution at the National Institutes of ...

Since 2022, H5N1 has been infecting chickens, cows, wild birds and cats — among several other animals. With a record number of human cases in the U.S., the situation is getting increasingly ...

A new study has found that the H5N1 avian influenza virus is mutating to evade immune defenses in mammals following prior infection or vaccination. The research, led by UNC Charlotte, emphasizes the ...

An outbreak of influenza A (H5N1), “bird flu,” in humans started in the U.S. in March 2024, and as of March 2025, continues to be monitored by the Centers for Disease Control and Prevention (CDC).

The new study shows that this aging process may not inactivate the H5N1 virus, however, and it underscores the risk of consuming raw or undercooked foods during the bird flu outbreak, which ...

The Michigan State University Veterinary Diagnostic Laboratory said cats appear to be highly susceptible to the HPAI A(H5N1) strain of avian influenza and "increased vigilance is needed to both ...

The discovery of silent H5N1 infections in unexpected populations, the emergence of new variants, and its potential to evolve into a human-to-human transmissible virus necessitates immediate and ...

A subtype of avian influenza, known as H5N1, continues to spread among wildlife, dairy cows, domestic birds, and some pets in a string of global outbreaks that began in 2020. The highly pathogenic ...

Petersen gathered a few and sent them to a lab. The results came back positive for influenza-A subtype H5N1. Bird flu. With that diagnosis in mind, one of Russo’s colleagues tried to get some ...

A growing number of California cats and an unknowable population of free-roaming “community cats” have been contracting avian flu, or H5N1. According to the U.S. Department of Agriculture ...

Public officials said the H5N1 bird flu virus has been detected at four dairy farms in San Bernardino County. The risk of H5N1 infection remains “relatively low,” and no person-to-person ...

San Diego-based Arcturus moved the self-amplifying mRNA vaccine, dubbed LUNAR-H5N1, into a phase 1 trial in December. The study aims to enroll 200 healthy adults in the U.S., and is fully funded ...