CDC confirmed a new human case of H5N1 in California. The recent case involves a child from San Francisco. CDC data reveals that California has been the worst affected by the ongoing bird flu outbreak with 38 of the total cases reported.

The Trump administration’s directive to halt external communications from federal health agencies raised concern Wednesday among Bay Area health experts and local agencies, who warned that the pause could have significant consequences for public well-being — especially amid ongoing threats like the H5N1 avian influenza,

The CDC has confirmed a new human H5N1 bird flu case in California, raising the US total to 67. Most cases involve farm workers exposed to sick animals. The CDC urges rapid testing, antiviral treatments,

The flu vaccine is generally about 40% effective at completely preventing influenza, according to Blumberg. The flu vaccine protects against three strains of influenza, including two influenza A strains. It also protects against influenza B, which typically shows up later in the season, Blumberg said.

First came the fires. Then, there was ash and contaminated water. Now, some survivors of the Southern California wildfires are dealing with outbreaks of norovirus and other stomach ailments at a shelter set up to help evacuees.

The US CDC confirmed another case of avian influenza A(H5N1), or bird flu, in California, bringing the nationwide total of cases to 67.

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.

There have been 66 other human cases of bird flu reported in the US in an ongoing outbreak in wild animals, poultry and dairy cows, according to the CDC. In December, a child in California tested positive for influenza A after drinking raw milk.

The highly contagious outbreak of norovirus has sickened at least 28 people staying at a California wildfire evacuation shelter. Public health officials said the gastrointestinal illness has been detected among a group of people at the Pasadena Convention Center,

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

The pause also applies to anything intended to be published in the Federal Register, where the executive branch communicates rules and regulations, and the Morbidity and Mortality Weekly Report, a Cen

The Trump administration has put a freeze on many federal health agency communications with the public, through at least the end of the month.