Vaccination disparities across race and ethnicity persist in Mass. communities most affected by COVID-19 By Deanna Pan Globe Staff,Updated April 16, 2021, 1 hour ago Email to a Friend Cynthia Torres and other La Colaborativa staff members and volunteer doctors went door-knocking in Chelsea's hardest hit neighborhoods to educate residents about the COVID-19 vaccines and help them address their many urgent needs.Craig F. Walker/Globe Staff Despite efforts to ensure the COVID-19 vaccines are distributed equitably across Massachusetts, predominantly Black and Latino communities, where the risk of infection is greatest, still have among the lowest inoculation rates in the state, according to a new analysis by physicians and researchers at several Boston-area institutions.