Massachusetts September 23, 2021 5:09 pm As Pfizer Vaccine Booster Gets Approved, Many Questions Remain As booster shot approvals are rolling in from the federal government, what doctors are saying about who should get more shots — or their first ones. US & World Videos 3:05 100 protesters detained at Northeastern University 2:39 Community mourns police sergeant killed on duty 4:32 Anti-war protester at Northeastern speaks amid arrests: ‘We are peaceful students' 5:39 Billerica police sergeant hit and killed by excavator during construction detail 2:30 Arrests made in string of home break-ins targeting Asian-Americans
