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SARS-CoV-2 Outbreaks in Care Homes for the Elderly and Disabled in Germany.

The authors investigated in their comparative epidemiological analysis of the time periods before and after the start of the vaccination campaign 7794 outbreaks with 177 696 outbreak cases in care homes. 74.6% of the age group was 60 or older. The case-fatality rate among outbreak cases was 14.5%. The size and severity were compared for the following phases of the pandemic: phase 1, the period before vaccinations had been introduced; phase 2: start of the vaccination campaigns; phase 3: the period from which a majority of the residents had been fully initially immunized. From phases 1 to 3, the median number of cases/outbreaks fell from 21 to 8. The case-fatality rate fell from 15.7% to 10.0%.