Earlier quoted context omitted.
The linked chart shows that there were none in the 20-24 age range during the during the recent few years. Is the entire population vaccinated? If not (the article doesn't claim this), then the fact that no one in that age range died (and only 5 in the entire under-30 cohort) tends to indicate that it was not a very high base rate. Are there other sources that show data going back to the 1970s? Probably! I didn't go…
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Please stop with the ad hominem business, which is frowned upon by the HN guidelines (I see you're new here).