Prior infection and vaccine mandates

[tall73]

A Systematic Review of the Protective Effect of Prior SARS-CoV-2 Infection on Repeat Infection

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We systematically reviewed studies to estimate the risk of SARS-CoV-2 reinfection among those previously infected with SARS-CoV-2.

Of those, 10 studies were eligible for our systematic review. The weighted average risk reduction against reinfection was 90.4% with a standard deviation of 7.7% (p-value: <0.01). Protection against SARS-CoV-2 reinfection was observed for up to 10 months.

The protective effect of prior SARS-CoV-2 infection on re-infection is high and similar to the protective effect of vaccination. More research is needed to characterize the duration of protection and the impact of different SARS-CoV-2 variants.

 

[LeafByNiggle]

It does show no infections for that group, which means pretty good protection over 5 months for that many people.

I agree that it is "pretty good".

....it may be best not to use limited doses on those with prior infection when they already have substantial protection. This is especially true in the context of poorer nations not having doses.

That is also true. We should invest more heavily in exporting vaccines and get Pfizer and Moderna to refrain from enforcing their patents and provide the production info necessary.