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

New findings underscore the heightened risk of bird flu exposure for dairy farm workers.

Frequent viral and bacterial infections in kids boost nasal immune defenses. That may have protected them from severe COVID, a study finds.

The risk of avian flu to humans is low, for now. An expert weighs in on what you need to know—and how a universal influenza vaccine could help.

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

The virus that causes COVID-19 can breach the blood-retinal barrier, leading to potential long-term consequences for the retina and vision.

Researchers may have found an "Achilles heel" for hepatitis B, which affects about 296 million people and kills about 1 million every year.

Cases of measles, a highly contagious and deadly disease, are surging in parts of the US. Experts fill you in on what you need to know.

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

A new study of how phages disarm dangerous bacteria could lead to new treatments for bacterial infections, researchers report.