related_tweet: @saucyflyer @brandon44963912 @scientistswanda 15 months of clinical trial data up to phase 3, and post-approval safety and effectiveness data from 2.6 billion doses.
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  cdc - 27 july 2021: a growing body of evidence suggests that mrna covid-19 vaccines also reduce asymptomatic infection and transmission.