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"Not one of the 1359 previously infected subjects who remained unvaccinated had a SARS-CoV-2 infection over the duration of the study." The duration of the stu

• teachingassist 5y ago
  This comment is right - and the study began shortly after Ohio's peak of infections. As such, most infected participants would have been recently infected in a situation with low and decreasing virus circulation. Nobody thinks there's any risk of reinfection at that point.
• wpasc 5y ago
  why the downvotes on this comment? iirc the vaccine response was shown to diminish over time and health experts discussed the potential need for covid vaccine booster shots. a limited timeframe for reinfection poses an issue considering we may never be truly done with this disease as it could recirculate and require frequent shots like the flu
• big_fat_pp 5y ago
  From the study itself: > This study was not specifically designed to determine the duration of protection afforded by natural infection, but for the previously infected subjects the median duration since prior infection was 143 days (IQR 76 – 179 days), and no one had SARS-CoV-2 infection over the following five months, suggesting that SARS-CoV-2 infection may provide protection against reinfection for 10 months or longer.