The US Centers for Disease Control and Prevention says it has ended its emergency response to H5N1 bird flu, citing a drop in cases.

A CDC advisory panel vote to recommend against use of seasonal influenza vaccines containing small amounts of thimerosal followed a presentation that misled on the risks of the rarely used preservative.

The U.S. has seen more measles cases in 2025 than in any year since the virus was declared "eliminated" in 2000.

Before the COVID-19 pandemic, the CDC said, there were about 2,000 cases of mostly travel-related malaria in the United States each year, and about 300 people experienced severe disease.

Officials at the US Centers for Disease Control and Prevention are closely tracking recent clusters of monkeypox infections around the world – and possible cases in the United States.

Now, flu-like activity is high or very high in two-thirds of the United States, including California, New York City and Washington, as well as throughout the South and Northeast, according to the CDC.

Doctors and researchers said the moves will make it harder to detect potentially dangerous changes. If the virus continues to jump between species or the human case count grows, there’s a greater risk that it could mutate and become more easily transmissible between people,

In the United States, the culprit behind most rabies cases has shifted from dogs to bats. The flying mammals now cause 7 out of 10 US rabies cases, according to a report from the Centers for ...