Researchers discover that COVID-19 uniquely causes brain inflammation and disrupts serotonin/dopamine pathways, explaining "brain fog" in Long COVID.

Even a mild case of COVID-19 or the flu can impact the body long after the fever and cough fade, according to new Tulane University research that may help explain why some people struggle to feel ...

Find out how different vaccines for the coronavirus cause your body to create antibodies that fight the virus.

Some cancer cells don't die; they go quiet, like seeds lying dormant in the soil. These "sleeper cells," scattered throughout the body, can stay inactive for years. But when the body faces a ...

Researchers at the University of California, Davis, have traced a deadly cat coronavirus in a way that changes what you think ...

Vaccines have traditionally worked by teaching the immune system to recognize a specific virus or bacterium—in effect, ...

We are now approaching six years since COVID-19 was declared a pandemic by the World Health Organization, yet talk of vaccines and our immune systems persists in our cultural conversations — from ...