coronavirus pandemic March 6, 2021 6:19 pm Harvard Immunologist Confident COVID Vaccines Can Bring Us to Herd Immunity A Harvard immunologist is confident the current vaccines will be effective enough to bring us to herd immunity despite the variants that are out there. US & World Videos 1:56 20-year-old killed, teen critically hurt in Northbridge double stabbing 1:50 Man found shot to death in Taunton shed 1:43 Authorities respond to incident in Northbridge 0:49 Bowling alley reopens 6 months after mass shootings in Lewiston, Maine 2:27 Mother speaks out after school shooting threat in Milton