Current estimates of the vaccination efficacy are:
preventing exposure to infection: 8.0% (CI 4.0 to 11.8)
preventing transmission following infection 81.7% (CI 80.5 to 82.9)
preventing serious illness when symptomatic (age 15-34) 73.8% (CI 73.1 to 74.6)
preventing serious illness when symptomatic (age 35-70) 48.6% (CI 47.1 to 50.1)
preventing fatality when seriously ill 93.8% (CI 93.3 to 94.3)The corresponding cumulative (vaccinated vs. unvaccinated) risks are:
relative risk of infection 92.0%
relative risk of mild illness 49.0%
relative risk of severe illness 18.1%
relative risk of fatality 1.1%
https://www.fil.ion.ucl.ac.uk/spm/covid-19/forecasting/forecasting_010821.pdf
heißt noch mal auf den Punkt gebracht:Der Eigenschutz vor einer Infektion ist sehr gering, der Fremdschutz hingegen sehr hoch.