Another study on whether natural immunity is better than vaccination. This time from Israel.Totally different results from the US study.
In one group compared unvaccinated subjects who had had covid v double vaxxed subjects.The events had occurred in Jan or Feb 2021.
Result-
After adjusting for comorbidities, we found a statistically significant 13.06-fold (95% CI, 8.08 to 21.11) increased risk for breakthrough infection as opposed to reinfection (
P<0.001).
Tat is the vaxxed subjects were 13.06 times more likely to get infection than previously infected subjects.
Then they studied when the time of infection or vaccination occurred was irrelevant.
Result-
After adjusting for comorbidities, a 5.96-fold increased risk (95% CI, 4.85 to 7.33) increased risk for breakthrough infection as opposed to reinfection could be observed (
P<0.001) (
So a 5.96 increased risk if vaxxed.
In the third study compared unvaxxed previously infected with previously infected + 1 dose vaccine.
Result.
Examining previously infected individuals to those who were both previously infected and received a single dose of the vaccine, we found that the latter group had a significant 0.53-fold (95% CI, 0.3 to 0.92)
One dose led to a halving of risk in previously infected subjects.
Background Reports of waning vaccine-induced immunity against COVID-19 have begun to surface. With that, the comparable long-term protection conferred by previous infection with SARS-CoV-2 remains unclear. Methods We conducted a retrospective observational study comparing three groups...
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