Massachusetts September 21, 2021 11:24 pm Teen Vaccination Rates Soar in Chelsea Once among Massachusetts’ communities hit hardest by the COVID-19 pandemic, Chelsea now leads the way in vaccinations for teenagers, with a rate of more than 90%. US & World Videos 0:51 SUV slams into Mickey Malone's Tavern in Brockton 1:54 No deal for striking teachers in Beverly and Marblehead 0:45 Explaining what a ‘stinger' injury is 3:17 Forecast: All eyes on possible rain, snow on Thanksgiving 0:28 3 killed in crash on I-93 in Salem, NH