Pfizer reduced rates by 82% whereas a Covid infection reduced rates by 73%.
>Fourteen days after a second dose of Oxford-AstraZeneca or Pfizer-BioNTech, rates had dropped by 67% and 82% respectively. In comparison, people who had not been vaccinated but had had COVID-19 before had rates which were 73% lower than unvaccinated individuals
https://www.ox.ac.uk/news/2021-08-19-vaccines-still-effectiv...
Pfizer reduced rates by 82% whereas a Covid infection reduced rates by 73%.
>Fourteen days after a second dose of Oxford-AstraZeneca or Pfizer-BioNTech, rates had dropped by 67% and 82% respectively. In comparison, people who had not been vaccinated but had had COVID-19 before had rates which were 73% lower than unvaccinated individuals