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I haven't seen the calculation for the protective benefit of a #sars_cov_2_vaccine against asymptomatic transmission yet, so here it goes : Suppl. Table 18 in the Moderna NEJM efficacy/safety manuscript: nejm.org/doi/suppl/10.1…
Asymptomatic infection at the time of dose #2 administration, appears to be diagnosed by PCR. For the placebo group there were 39 PCR+ infections out of 14598 people; for the vaccine recipients there were 15 out of 14550,
Vaccine efficacy is (((332-293)/14598)-(15/14550))/((332-293)/14598), or 61.4%, against asymptomatic infection.
