This is a very old technique by antivaxxers. During measles outbreaks pre-pandemic, antivaxxers would point to the number of fully vaccinated children getting the measles as "evidence" the MMR doesn't work, ignoring the denominators (how many unvaxxed vs. vaxxed).https://twitter.com/angie_rasmussen/status/1415314151476453379 …
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Calculating relative risks is even better. I'd have to look up the paper, but I seem to recall that during an outbreak the risk of getting measles among unvaccinated children was something like 23-fold higher than among vaccinated children.
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Part of the reason pointing to "breakthrough infections" (or whatever you want to call them) is scary to people is that there is a mistaken belief that vaccines are 100% effective. No vaccine is 100% effective. MMR, for instance is around 95% effective.
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#CovidVaccine is very effective, the mRNA varieties perhaps as effective as MMR vaccines against measles, but they are not 100% effective. Again, no vaccine is. To imply that they don't work because they are not 100% effective is the Nirvana fallacy.Show this thread
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