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Yeah how would they find anyone careless enough aged more than 65 who would accept to 1/ take the vaccine 2/ expose himself to the virus to chekc his immunity
by mam2 6y ago
Yeah how would they find anyone careless enough aged more than 65 who would accept to
1/ take the vaccine
2/ expose himself to the virus to chekc his immunity.
We will never know before trial
- mattkrause 6y agoNone of these trials have used a "challenge" design where people were deliberately exposed to the virus. Instead, they vaccinate a ton of people and then let them go about their lives. Participants' risk of getting COVID shouldn't go up, unless participating in the trial induces them to behave more riskily.
- tinus_hn 6y agoThat wouldn’t be smart because they don’t get to know if they got the vaccine or the placebo.
- mattkrause 6y agoNo, definitely not! Still, risk homeostasis is (sometimes) a thing: people reportedly ski faster when wearing a helmet, drive closer with ABS, and stuff like that. I was just trying to pre-empt that argument. That said, if this were a factor, it would be small and would make the trial results most impressive, rather than less.