Yes cases show up in the data on the day that they first report symptoms, not when they were first exposed. As you say, this means that if the data show some efficacy on a given day, you should actually expect to be protected at that level a few days before.
On top of that, people in the waiting room were talking about how you can tell if you’re getting the real vaccine by looking at the syringe. And top of that, the doctor who gave me the injection basically told me that I got the real thing (“Keep wearing your mask, we don’t know yet if these work”), and said something equally revealing to at least one other person I know who did the trial.
Wow. I know that because of side-effects these things can never be fully blinded, but this is just horrifying.
(Technical point: the phase 3′s still were randomized controlled trials, they just weren’t double-blind. But double-blind is the relevant characteristic when asking whether the different results are due to partying Israelis, so that’s fine.)
Yeah, the part I was objecting to there was “the placebo group was given a fake injection and everything”. Not only did they do far less than “everything” that is supposed to go with giving fake injections, they also failed to give me a fake injection! My second “placebo” was a real vaccine and my dad’s second “vaccine” was a placebo!