a very simple example: if literally everyone is vaccinated then yeah shockingly 100% of cases are going to occur among the vaccinated this doesnt really tell you anything other than "breakthrough cases can occur" but if you print this without context people will lose their shi
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what you might really be interested in is something like P(infection | vaccinated) vs P(infection | unvaccinated) unfortunately my suspicion this gets really hard to measure when almost everyone is vaccinated or almost no one is
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reason being that once you get a really small denominator in (% cases in unvaxxed) / (% unvaxxed in population) small errors in your estimation of (% unvaxxed in population) have a much larger impact in your estimation of the relative risk
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anyway just spitballing but first pass at least im kind of wincing about all of this
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Also the total numbers in a lot of these places are very small. 75% sounds really bad until you hear there where only 5 total cases
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generally agree, but if there is a significant outbreak (like, hundreds to thousands of new cases) in a population nearly 100% vaccinated, it does seem to put a wrench in the idea of "if everyone were to just get vaccinated, covid would go away"
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yup absolutely
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The good metric would be percent chance of infection upon exposure, compared to unvaccinated, but that's an impossible number to find.
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thats the case here though; that town in question is very high vacc rate so it becomes useful to see what percentage of cases were vaccinated. it's a tiny sample tho so you cant get anything meaningful out of it
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it's a vacation area w lots of out of towners so resident vax rate is not so helpful
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