NPPB and infection: Although there are significant differences regarding the NT-pro-BNP levels between the groups after infection in the CovVac group, we want to underline that first, the sample size is small compared with the entire cohort and second, all values are below the laboratory cutoff values/thresholds (NT-pro-BNP < 500 ng/dl and hs troponin-T < 15 ng/dl).