Health experts are hopeful that vaccines will stop the coronavirus outbreak in the U.S. But what will it take to make the 12 to 15 billion doses to cover the entire globe?

Clinicians in private practice, those who work for staffing agencies and others who are not directly employed by hospitals or long-term care facilities say they have been overlooked in the rollout.

Dr. Chizoba Barbara Wonodi of Johns Hopkins University explains why a strategy to vaccinate everyone may not be the best approach to fighting the virus in lower-income countries such as Nigeria.

"I feel like healing is coming," New York critical care nurse Sandra Lindsay said after receiving her shot. "I hope this marks the beginning to the end of a very painful time in our history."

The U.K. was the first Western country to approve Pfizer's coronavirus vaccine for emergency use. In the U.S., the Food and Drug Administration could vote to approve the vaccine as early as Thursday.

Pew Research Center found 83% of Asian Americans said they would get a vaccine compared to 42% of Blacks. White and Latinx respondents were about even with 63% and 61% respectively saying they would.

The new ban is an expansion of the social network's rules against misinformation that could lead to imminent physical harm. It comes as governments prepare to roll out the first vaccinations.

If approved, the vaccine could be distributed before the end of the year, BioNTech says.

Watch an expert panel discussion on the effort to develop and deploy safe and effective vaccines against COVID-19 on Friday, Nov. 20, to be live-streamed here at 12 p.m. ET

Pfizer's COVID-19 vaccine is the first to have data showing that it exceeded the minimum effectiveness threshold set by the Food and Drug Administration for emergency use.

Most of the federal contracts with companies involved in the crash program to make COVID-19 vaccines haven't been made public. The lack of disclosure raises questions about accountability.

A panel of doctor and scientists raised questions about the expedited regulatory path the Food and Drug Administration is considering for COVID-19 vaccines.

The agency, also known as the United Nations Children's Fund, plans to distribute up to 1 billion syringes by 2021.

Here's irony: tobacco plants may be key in preventing COVID-19. Two companies are using the plants to produce proteins for a vaccine. One candidate vaccine is already in a clinical trial.

The move is a reversal of Facebook's longstanding reluctance to block problematic content. Critics say public health misinformation has flourished on the social network.