Moderna has begun testing its vaccine on children as young as 6 months old. A principal investigator in the trial says getting children vaccinated would be "a step getting back to our normal life."

Several other countries including France, Germany, the Netherlands and Ireland moved to suspend injections of the vaccine this week.

A 1950 law allows the government to award contracts that take priority over all others for national defense. During the pandemic, the law has been used to defend the country against the coronavirus.

People who've had dose 1 are wondering ... can I have a few drinks before dose 2 or will that muck things up? Also: Do you really understand the concept of "vaccine efficacy"? It's complicated!

The president was joined virtually by the leaders of Japan, India and Australia, in his first multilateral leaders' meeting. They launched a plan to boost vaccine production and distribution in Asia.

In 1721, London was in the grips of a deadly smallpox epidemic. One woman learned how to stop it, but her solution sowed political division.

The 85-year-old Tibetan spiritual leader scrapped plans to receive the injection at home, opting instead to travel to a clinic. "More people should have courage to take this injection," he said.

Everyone in Sitka, Alaska, who's age 16 or older can get the COVID-19 vaccination. The tribal health service there has been so efficient, they've already vaccinated those at higher risk.

The same electronic systems used to record when patients get a physical or go to the ER are also used to log data when coronavirus vaccines are given. But the systems don't share information easily.

The social network says it will focus on groups, pages and accounts repeatedly sharing false claims about vaccines.

I haven't seen my mother in over a year. I was going to visit in April to celebrate her 90th birthday but the pandemic put that on hold. Now that she's been vaccinated is it time for the birthday hug?

One day you're worrying about the regular old coronavirus. Then — seemingly out of the blue — there are variants. Worrisome variants! How did they come to be? And why are they likely more contagious?

Dozens of protesters gathered at the entrance to one of the nation's largest mass-vaccination sites, leading officials to shut down the entrance for an hour.

As COVID-19 vaccines roll out, doctors say it's long past time to address the exclusion of pregnant women from research on drugs and vaccines. They say better study design is the answer.

For two of the biggest obstacles to curbing the pandemic, it won't just be federal officials who will lead the way, says Dr. Celine Gounder, a member of President Biden's COVID-19 advisory board.