>Two doses of either vaccine still provided at least the same level of protection as having had COVID-19 before through natural infection; people who had been vaccinated after already being infected with COVID-19 had even more protection than vaccinated individuals who had not had COVID-19 before. [my emphasis added]
Not according to a recent Oxford study. Quite the contrary, actually.
https://www.ndm.ox.ac.uk/covid-19/covid-19-infection-survey/...
>Two doses of either vaccine still provided at least the same level of protection as having had COVID-19 before through natural infection; people who had been vaccinated after already being infected with COVID-19 had even more protection than vaccinated individuals who had not had COVID-19 before. [my emphasis added]