4 ms·

Yes, young and strong, male (to avoid risk of pregnancy)

• spacehome 6y ago
  It’s 2020. Men can get pregnant.
• sydd 6y ago
  This is a gross overstatement. They excluded a very tiny part of the population (my guess is under 0.1%), nowadays you cant find a material that no one is allergic to.
  • vanderZwan 6y ago
    The question GP answered was whether this was normal procedure for vaccine trials, not what happened during this particular one.
• kolinko 6y ago
  Pfitzer and Moderna vaccines were tested on both males and females.