https://www.medrxiv.org/content/10.1101/2022.12.17.22283625v1.fullStudy from Cleveland OH... results are as follow:
Vaccine doses versus risk of covid during the 3-month study period
One dose, 1.7 times more likely to test positive for covid
Two doses, 2.63 times more likely to test positive for covid
Three doses, 3.1 times more likely to test positive for covid
More than three doses, 3.8 times more likely to test positive for covid
So compared to the unvaccinated
1, x 1.7
2, x 2.36
3, x 3.1
4, x 3.38
P = 0.001 means 999 out of 1,000 likely to be a genuine result
That 99.9% likely to be a genuine result
Effectiveness of the Coronavirus Disease 2019 (COVID-19) Bivalent Vaccine