Bird flu is a disease caused by avian influenza A viruses, according to the CDC. The virus mostly spreads between birds and dairy cows, but there have been 67 human cases of bird flu nationwide and one death tied to the infection since 2024, CDC records show.

Due to ongoing sporadic H5N1 avian flu infections and brisk levels of seasonal flu activity, the US Centers for Disease Control and Prevention (CDC) today urged healthcare providers to subtype all influenza A specimens in hospitalized patients, especially those in the intensive care unit (ICU), as soon as possible.

Health officials in San Francisco ... for COVID-19, influenza and RSV based on symptoms and had tested positive for influenza A. The child's specimen was then tested for H5N1, which was positive.

San Francisco reported its first case of H5N1 bird flu in a resident. According to the San Francisco Department of Public Health, the virus was detected in a child. The child has fully recovered.

CDC officials say they extended the guidance now because they are seeing more H5N1 patients whose illness they cannot track back to an infected bird or cow.

As the Centers for Disease Control and Prevention (CDC) explains, bird flu is a disease caused by the influenza A virus. At the same time, recent CDC data shows that seasonal influenza A is rising across the U.

The findings come at a time when outbreaks of bird flu -- a different subtype of the same ... of the highly pathogenic avian influenza (HPAI) H5N1 influenza virus currently circulating

The CDC has confirmed a positive bird flu case in a child in San Francisco, the second juvenile case of H5N1 in the country.

Seasonal influenza vaccines triggered protective immune responses against the H5N1 avian influenza virus primarily in younger people, indicating its potential use as a first line of defense during an eventful pandemic.

The Centers for Disease Control and Prevention today released an advisory recommending clinicians expedite subtyping of type A influenza samples from hospitalized patients, particularly individuals in an intensive care unit.

Health officials have identified another possible case of bird flu in a child — this time in San Francisco. The San Francisco Department of Public Health said the presumptive case was discovered through routine testing based on the child's symptoms. They were also tested for COVID-19 and RSV.