An initial 18m doses will be delivered over the next two years to combat a disease that kills nearly half a million children annually
  • tookmyname@lemmy.ml
    61·
    2 years ago

    First step is testing safety. Then you give it to a much larger group to establish the level of effectiveness, since you need a lot of data to establish that. After the effectiveness is established you would declare it safe AND effective.

    SMH. Can’t imagine how that’s not obvious.