The vaccine maker alleges that its rivals Pfizer and BioNTech used some patented features of its mRNA technology to develop their COVID vaccines.

Dr. Anthony Fauci helped guide the U.S. through the COVID crisis, and earlier in his career played a key role in the response to AIDS. He has served under seven presidents.

Emergency contraceptives and abortion pills are not the same thing, though people often confuse them. Now that Roe v. Wade has been overturned, it's vital to know the difference — and your options.

Mental health advocates applaud the proposals, which they say offer much-needed federal leadership on a growing national crisis. But they worry about getting sustainable funding for the efforts.

The federal health agency released new guidance for when Americans need to mask up indoors, saying about 70% of the population lives in a place where it's safe to go mask free.

It's been another tough pandemic year. Where did you find joy, delight or awe? Tell us what small corners, tiny moments, or specific rituals provide you refuge in stressful times.

What's the U.S. doing to watch out for the omicron variant? Here's the work underway and the challenges that experts say may slow down the country's efforts.

Kids ages 5 to 11 will soon be able to get Pfizer's low-dose COVID vaccine. CDC director Rochelle Walensky agreed with a unanimous decision of a team of advisers that the benefits outweigh the risks.

Many Americans are now eligible for a COVID vaccine booster. Are you? Our quiz will help you figure it out.

Roughly 175,000 children in the U.S. have lost one or both parents or a grandparent caregiver to COVID-19, according to a new study. The majority come from racial and ethnic minority groups.

With the back and forth on boosters from government agencies, many Americans are wondering if they really need an extra shot. Here is what the science says about who needs a booster now — and why.

Though infections are still sky-high, the U.S. may be turning a corner, according to a consortium of researchers who forecast the pandemic. And we may well be spared a winter surge.

If all goes to plan, Americans who got Pfizer or Moderna shots can get a third dose eight months after their last jab. Here's why health officials think you'll need one.

People with weakened immune systems who already got two doses of the Pfizer or Moderna COVID-19 vaccines can now get a third shot. But exactly who is eligible? Here's what we know so far.

As the delta variant takes over in the U.S., new, localized outbreaks are emerging. Those surges are likely driven by pockets of dangerously low vaccination rates.

Can I get a massage? Travel with my unvaccinated kids? Eat indoors at a restaurant? Hit the gym? Experts weigh in with advice on 16 frequently asked post-vaccination questions.

President-Elect Joe Biden shares details of how his administration hopes to tackle the country's public health crisis. It's an aggressive plan that he needs Congress to fund.

Many favorite holiday traditions could be treacherous this year because of the coronavirus. Here's how experts view the risks — and some creative, safer alternatives to keep up a festive mood.

An independent federal advisory committee to the CDC recommends the Pfizer-BioNTech vaccine for people over 16. But state health leaders say distribution and funding challenges remain.

The President's diagnosis calls for contact tracing on a massive scale. Luckily, not everyone President Trump saw this week with is a high risk exposure. Here's who is.