
Charlie Baker @MAGovArchive
On Monday, @pfizer began the last stage, or phase 3, of an experimental COVID-19 vaccine study that seeks to enroll 30,000 people. Their team here in Andover has been working on the development, manufacturing and testing of a potential COVID-19 vaccine. #COVID19MA https://t.co/R5dxkY4uB7 — PolitiTweet.org