Some people have big hopes for 2021. Hopes of returning to some form of what we once knew as normal: being with friends and family, eating at restaurants and even seeing shows. Those hopes are ...

Some viruses mutate more rapidly than others. Learn more about why that is and what that means for your health.

SARS-CoV-2 is a protean virus. It seems designed to reinfect a previously infected host, changing its outer coat as well as some of its properties. The virus is also adapting to a number of new ...

With the arrival of spring, the United States is easing out of respiratory virus season, a familiar pattern that has been challenged by COVID-19 for the past four years.Related video above: CDC ...

WASHINGTON (AP) — COVID-19’s origins remain hazy. Three years after the start of the pandemic, it’s still unclear whether the coronavirus that causes the disease leaked from a lab or spread to humans ...

The most common respiratory viruses that cause flu, colds, and RSV tend to cluster in the fall and winter months. Though that means months of elevated risk for sickness, "cold and flu season" is a ...

The COVID-19 virus can persist in the blood and tissue of patients for more than a year after the acute phase of the illness has ended, according to new research from UC San Francisco that offers ...