re: Infection rate of vaccinated exceed that of unvaccinated in the UK. New data

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So basically they don’t know, because it was 100%, then 99%, then 95%, now they are throwing out ranges as a fricking guess.

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In science the more data you have the more accurate you can be.

While they may have had tens of thousands of trial patients that they used to base the 90-95% effectiveness with they now have 50 million people they can use the data for plus a longer observational time.

A new virus plus new vaccinations means a lot of small sample sizes at first so the numbers change as the sample sizes grow, but it isn’t because they “don’t know”. They weren’t lying to you, it’s just what the numbers told them at the time.