I will cut to the main point: "the adjusted odds of laboratory-confirmed COVID-19 among unvaccinated adults with previous SARS-CoV-2 infection were 5.49-fold higher than the odds among fully vaccinated recipients of an mRNA COVID-19 vaccine"
Laboratory-Confirmed COVID-19 Among Adults Hospitalized ...
This report describes mRNA COVID-19 vaccine recipients as having greater immunity from COVID-19 infection than previously infected, unvaccinated persons.
www.cdc.gov