3 ms·

From what I've heard from one of the trials, they used a meningitis vaccine that actually does hurt. (Its side effects are known but minor.) That was hearsay,

From what I've heard from one of the trials, they used a meningitis vaccine that actually does hurt. (Its side effects are known but minor.) That was hearsay, though, and I don't have access to the internal protocol.

kart23 6y ago
No, the trial procedure is publicly available. They used a saline solution as the placebo.
- ebiester 6y ago
  I should have double checked on clinicaltrials.gov first. (I was thinking of the AstraZeneca trial.)
hobom 6y ago
The AstraZeneca trial was the one to use the meningitis vaccine.