RT [@nycjim](https://twitter.com/nycjim/status/1329033472032313344) Pfizer says its vaccine prevented mild and severe forms of #Covid19 in clinical trials and proved to be 94 percent effective in older adults. https://t.co/T8pyj057vq https://t.co/xN8pMbi2qW
Pfizer says its vaccine prevented mild and severe forms of #Covid19 in clinical trials and proved to be 94 percent effective in older adults. https://t.co/T8pyj057vq pic.twitter.com/xN8pMbi2qW
— Jim Roberts (@nycjim) November 18, 2020