SEATTLE -- U.S. researchers gave the first shot to the first person in a test of an experimental coronavirus vaccine Monday -- leading off a worldwide hunt for protection even as the pandemic surges.

Pfizer Inc said on Monday its experimental vaccine was more than 90% effective in preventing COVID-19 based on initial data from a large study, a major victory in the fight against the pandemic.

Do I need to get tested for COVID-19 if I'm vaccinated? The answer is, yes, if you've been around someone who has COVID-19. The latest guidance from the U.S. Centers for Disease Control and Prevention ...

New research found that mRNA vaccines for COVID-19 could enhance cancer treatments and help patients live longer.

SAN FRANCISCO -- Travelers could be looking at new COVID restrictions as we embark on the holiday season. It's one of several COVID-related updates for the airline industry. With the Thanksgiving ...

Fall is approaching, which means it's almost time for annual respiratory virus vaccinations. Most people older than 6 months were eligible for a COVID-19 booster shot before, but this year, the ...

Over 3.1 million children have tested positive for the coronavirus. Though Dr. Anthony Fauci, the White House chief medical adviser, predicted a COVID-19 vaccine may not be available for high ...

A team of researchers at the University of Pittsburgh has developed a skin patch that can detect antibodies associated with ...

Stratus and Nimbus have similar symptoms to previous variants including a fever, cough and runny nose, but the Nimbus variant ...

An important part of aging well is protecting ourselves from infectious disease—like COVID-19. Older adults continue to be at greater risk for severe COVID illness, hospitalization, and death due to ...

"The darknet is booming with activity related to the vaccines," an expert says. As states continue to open up eligibility for the COVID-19 vaccine and more services start to require proof of ...