The research determined that unvaccinated Kentucky residents who had a confirmed coronavirus infection last year had a "significantly higher likelihood of reinfection" than those considered fully vaccinated. The study concluded that the unvaccinated were 2.34 times more likely to contract COVID-19 again.
The study involved 246 Kentucky residents who were reinfected in May and June this year after having a confirmed 2020 case. They were compared to 492 controls who had a 2020 infection but were not reinfected.