Vaccine makers will have to run large new trials before updated shots can be approved for everyone who is not at a higher-than-average risk.

A highly transmissible new COVID-19 variant called NB.1.8.1, aka "Nimbus," is spreading in the United States, CDC data show.

New COVID variant NB.1.8.1, or Nimbus, is spreading rapidly in the US, accounting for over one-third of cases.

There is insufficient evidence to determine whether CoronaVac vaccine affects the number of people with symptomatic COVID-19 because results differed between the two studies (one involved only ...

There are ways to reduce your chances of coming home from vacation with a terrible cold, digestive issues or other health ...

“If you have any risk factors for DVT, talk to your doctor about precautions you can take prior to long-distance travel,” ...

The new COVID-19 variant NB.1.8.1, nicknamed ‘Nimbus,’ now accounts for 37% of U.S. cases. It spreads fast, causes severe ...