Infectious diseases can spill over from animals to humans as well as spill back. Each cross-species transmission gives pathogens a chance to evolve and spread even further.

The summer 2024 COVID-19 wave is a good reminder that it’s important to get vaccinated with the updated shot.

Proper hygiene, vaccinations and healthy habits can all reduce the spread of diseases in school.

Enhancing influenza vaccine cross-protection is essential to alleviate the public health burden of epidemics and pandemics, researchers say.

In this Q&A, experts explain what's going on with avian flu and what health officials are on the lookout for.

Researchers investigated a massive avian flu outbreak among elephant seals and found clear mammal-to-mammal transmission of the virus.

A new experimental vaccine that targets portions of the flu virus that don't change could lead to a universal, long-lasting shot.

Researchers have discovered a Florida bottlenose dolphin with highly pathogenic avian influenza virus.

Bird flu is circulating among dairy cows and a dairy farm employee has been infected. An expert explains what you need to know.

Researchers are developing a new recombinant flu vaccine that has the potential for stronger and broader immunity.