The convergence of multiple flu strains in one animal can allow new virus strains to form—just as they did in past pandemics.

The H5N1 virus, initially restricted to Eurasia and Africa, has since spread to North and South America and even reached ...

Scientists are increasingly concerned about zoonotic diseases in the post-Covid-19 era. Human activities and climate change ...

Recent social media posts have baselessly suggested that a new, lab-derived version of the H5N1 virus is going to cause a ...

If seabirds can catch avian flu by stealing food from infectious birds, it gives scientists a clue where to monitor for outbreaks among these vulnerable birds.

An extensive look at wastewater samples taken across the United States from May to July found traces of the H5N1 bird flu ...

Previous human infections occurred in workers on farms. But community transmission of the virus remains unlikely for now, ...

A close contact of someone with bird flu became ill on the same day, the C.D.C. reported. But the second person was not ...

A patient in Missouri was hospitalized with bird flu despite having no reported contact with animals, according to the CDC. Infectious disease experts discuss the potential risk.

Ticks are tiny parasites that can transmit infections, such as Lyme disease and Rocky Mountain ... Ticks feed on the blood of birds, reptiles, amphibians, and mammals—including humans ...

The rainy spring on Long Island provided rich breeding grounds for mosquitoes. The hot, relatively dry summer led mosquitoes ...

Unlike birds, the federal agency says ... There were no human cases in the state in 2021, 2022, or 2023. The disease gets progressively worse, officials say, with some patients slipping into ...