How does Pfizer’s genetic vaccine work against COVID-19?
Check out the video below to find out.
Pfizer says its vaccine has shown to be 90% effective in clinical trials and could soon be approved.
The clinical trial looked at the first 94 confirmed cases of COVID-19 among the more than 43,000 volunteers who got either two doses of the vaccine or a placebo.
They say 10% of infections were in participants who had been given the vaccine.
More than 90% of the cases were in people who had been given a placebo.