RE: as zero COVID-19 cases were reported in patients who’d been vaccinated for 49 days or more.
Another interesting question is this — were the subjects ever exposed to the Covid-19 virus during these 49 days?
Another interesting question is this — were the subjects ever exposed to the Covid-19 virus during these 49 days?
Excellent question.
If you find out, please ping and I will do the same.
“were the subjects ever exposed to the Covid-19 virus during these 49 days?”
Who has a ready supply of COVID to apply to peeps? In what concentration over what period?
Which COVID variant?
Where is the multivarient analysis?
CDC?, Bueller?
Of course. That's what the unvaccinated "placebo" (control) group is for. The two groups, vac'd and control, are each large and as identical as possible, including dispersal in a community in which community spread is ongoing at a strong rate. So, both groups should develop the same number of cases, but the degree to which the vac'd group does not develop as many cases as the control group determines the efficacy of the vaccine in the trial. The more cases in the control group, the greater the reliability of the results.
I imagine quite a bit of other tracking of subjects goes on as well.
In a different arena, my family is experiencing a containment effort right now. Several positive test results have popped up at the high school my daughter goes to -- students tested after an initial case appeared. This despite what looks to me like about as much prevention as can be practically applied, given PPE availability, in place. So, now a lot of tracking, contact tracing, and monitoring is going on. My wife got 3 e-mails on the subject just today, updating the situation, urging anyone with symptoms to quarantine and get tested, etc. Just how far this goes before the school reverts back to online learning I do not know. Hopefully the kids can stay in-classrooms, but I can't even hazard a guess as to the odds of that. :-(