The process to sign up for COVID-19 vaccines varies by place so NPR created a tool to help you understand how things work in your state and connect you with local resources.

With vaccine still scarce, and eligibility differing from place to place, some people have easier access to "extra" doses than others. Careful, ethicists warn. Going out of turn is a slippery slope.

What does it mean for the Johnson and Johnson vaccine to be 66% effective, compared with the 95% efficacy of the Moderna or Pfizer vaccines? We break down the numbers.

On Tuesday, President Biden announced a plan to boost the COVID-19 vaccine supply by 20% over the next three weeks and by hundreds of millions of doses by summer.

President Biden's goal is 100 million COVID-19 vaccine doses in 100 days. Health experts say it sounds ambitious, but it is within reach.

Black vaccine hesitancy goes back to history of distrust of medicine, say doctors and researchers. To help, it's important to empower people with knowledge to make their own choices.

Our correspondent took a flight Sunday and saw a number of concerning things in airports and on planes. So many questions were raised. We went in search of answers.

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.

Any air passengers flying to the U.S. will have to test negative for COVID-19. The CDC policy takes effect later this month and require passengers to get tested within 3 days of their flight.

The federal government announced several big changes to its vaccine plans, upending earlier guidance about whom to prioritize for the next phase.

With case and death counts still surging, the pressure is on to vaccinate as many people as possible. Here's what it will take to get more Americans their shots, fast.

The United States is now a few weeks into a massive COVID-19 vaccination campaign. And it has been going slower than health officials had hoped. NPR looks at solutions for speeding it up.

A third of Black Americans are hesitant to get a COVID-19 vaccine, according to a Kaiser Family Foundation poll. Some Black doctors are finding creative ways to encourage vaccine acceptance.

That number may sound like a lot but it's short of the original goal. As the second week of vaccinations draws to an end, officials say there are "some hiccups," but things are going more smoothly.

A federal advisory committee voted to put adults 75 and older and frontline essential workers next in line for COVID-19 vaccines.

Back in March, two people were stuck in Wuhan, China — the pandemic's first epicenter. We check in with them again as they navigate work and family life.

The first COVID-19 vaccines are being administered. There are, however, still great challenges ahead when it comes to making sure that people receive the vaccine sooner rather than later.

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.

In the U.S., front-line health care workers are likely first in line to get immunized with a COVID-19 vaccine, once the FDA says yes. But what about the rest of us? Here's what we know so far.

The federal government has released detailed local data on where hospitals are starting to fill up with patients. Researchers and health leaders say this was urgently needed.