This next study by Nakatani et al. was done in late 2023 in Japan and was published in 2024. It focused on employees at small and medium sized companies. It found “the odds of contacting COVID-19 were higher among vaccinated individuals compared to unvaccinated individuals (adjusted OR 1.85 (95% CI: 1.33-2.57, p<0.001).” In other words, being vaccinated increased the odds of getting infected with COVID by 85% compared to those who were unvaccinated.
When looking a little deeper and focusing on the impact of the number of COVID shots, here were the results.
“Participants who received one to two doses had an adjusted OR of 1.63 (95% CI: 1.08-2.46, p=0.020).
Those who received three to four doses had an adjusted OR of 2.04 (95% CI: 1.35-3.08, p=0.001).
Those who received five to seven doses had an adjusted OR of 2.21 (95% CI: 1.07-4.56, p=0.033).”
As people received more doses of COVID shots, their risk of infection went up significantly.




