which was not statistically signifiicant. That is called a
Posted on: August 3, 2021 at 11:26:16 CT
CulturedDan
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random effect. They only tested employees for COVID if the employee voluntarily presented for swabbing, therefore there was no proper way of fully measuring the effect.
Hence their conclusion:
"The cumulative incidence of SARS-CoV-2 infection among previously infected unvaccinated subjects did not differ from that of previously infected subjects who were vaccinated, and that of previously uninfected subjects who were vaccinated."
I recommend a health literature literacy class.