alt Hacker NewsWhy not just compare the incidence of sickness at the swimming event vs other triathlon swimming events and see if 2(or whatever the number of competitors affected was) is abnormal and work from there?
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thaumasiotes • last Saturday at 10:08 PM
That would be an approach to the question of "is the Seine dirtier than other triathlon events?", but it wouldn't address the question of "how did this guy get sick?"
Yep. That has, in fact, been done and seems to show an elevated risk of GI illness in Olympians who swam in the Seine compared to previous Olympics.
https://www.medpagetoday.com/special-reports/exclusives/1116...