A new @CDCMMWR finds mRNA #COVID19 vaccines highly effective in preventing COVID-19 among health care & other essential workers. The mRNA vaccines reduced the risk of infection by 80% after the 1st dose and 90% following the 2nd dose. Learn more: https://t.co/iqB1UvuF05. pic.twitter.com/alDyojp0v1— CDC (@CDCgov) March 29, 2021
A new @CDCMMWR finds mRNA #COVID19 vaccines highly effective in preventing COVID-19 among health care & other essential workers. The mRNA vaccines reduced the risk of infection by 80% after the 1st dose and 90% following the 2nd dose. Learn more: https://t.co/iqB1UvuF05. pic.twitter.com/alDyojp0v1