The vaccine produced by Pfizer and BioNTech is the first to be authorized by Canadian health officials. The decision makes Canada just the third country in the world to grant such an authorization.

While 61% of Americans overall say they trust the results of the 2020 presidential election, Republicans appear to be taking their cue from President Trump in not accepting the result.

The Food and Drug Administration finds "no specific safety concerns" that would stand in the way of authorization of the vaccine for emergency use. Effectiveness is 95% after two doses.

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.

The Pfizer-BioNTech COVID-19 vaccine was developed fast. But a leading vaccine expert says its important for consumers to know the companies "haven't cut corners" in the clinical science.

The former presidents' comments come as polls show many Americans would be hesitant to receive a vaccine once one becomes available.

A federal advisory committee to the CDC voted Tuesday on guidelines for who should get COVID-19 vaccines first. The committee decided to prioritize health care workers and nursing home residents.

Vaccines from Pfizer and Moderna, which held clinical trials at three Emory University sites in Atlanta, are expected to receive Emergency Use Authorization from the U. S. Food and Drug Administration. Dr. Carlos del Rio calls the timeline from development to distribution something "we have never seen before."

The first COVID-19 vaccines to hit the market will not be approved for use in children. Researchers must figure out if the vaccines are safe and effective in kids.

With promising news out of COVID-19 vaccine trials, the question now is how many people will get the vaccine? And can or will employers require their workers to get vaccinated?

The $1.95 billion Operation Warp Speed contract excludes government rights to inventions or production know-how developed in the manufacture of the COVID-19 vaccine.

Operation Warp Speed is allocating the first batch of 6.4 million COVID vaccines to states, based on population. This circumvents a CDC advisory committee, which proposed allocation based on risk.

At a virtual meeting of the G20, the German chancellor said she was worried about vaccine availability.

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

The pharmaceutical giant and partner BioNTech announced Friday that they are submitting a formal request to the Food and Drug Administration, just days after the vaccine was shown to be 95% effective.