While the percentage of previously reported cases as collected from the questionnaire in the study population was 2.39% (PCRrep+), the percentage of officially reported cases in the community of Gangelt at the end of the study period (April 6) was 3.08% (388/12,597). This indicates that previously SARS-CoV-2 diagnosed individuals were somewhat underrepresented in our study, possibly due to previously diagnosed people not opting to participate in the study given their known infection status, or for other reasons, such as quarantine, not feeling well or hospitalization. Thus, applying the corresponding correction factor (3.08% / 2.39% = 1.29) to the infection rate of 15.53% of our study population, the resulting corrected infection rate was 19.98% [15.84%; 24.40%] (Fig. 3B). Accordingly, the corrected higher infection rate reduced the IFR to an estimated 0.278% [0.228%; 0.351%]