moderna

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."

Pfizer and Moderna each agreed to supply 100 million doses of COVID-19 vaccine to the U.S. by the end of March. With just under three weeks left, both companies have their work cut out for them.

As the new Johnson & Johnson COVID-19 vaccine rolls out, the health care community is trying to ward off misconceptions about it. The vaccine's one-shot feature may be what wins many over.

The two companies making COVID-19 vaccines each promised to deliver 100 million doses to the federal government by the end of March. So far, they appear to be running behind.