COVID-19 vaccine November 16, 2020 6:08 pm Cambridge-Based Moderna Shares Encouraging COVID Vaccine News Moderna said preliminary phase three trial data shows its coronavirus vaccine is more than 94% effective in preventing COVID-19. US & World Videos 24:50 @Issue: Biden signs the foreign aid bill, and a retrospective of Boston's 2024 Olympics bid 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