Funding for this research was provided by:
Bundesministerium für Gesundheit (ZMVI1-2516NIK701)
Received: 15 January 2020
Accepted: 1 October 2020
First Online: 17 October 2020
Ethics approval and consent to participate
: Ethics approval and consent to participate were deemed not necessary for this study as all case-based data utilized in the study are routinely collected under the Robert Koch Institute’s legal mandate for national surveillance of infectious diseases in Germany, for the notification data in accordance with the German Protection against Infection law (Infektionsschutzgesetz). Data collected under this surveillance mandate are pseudonymized and no personal identifiable information such as names, personal or health IDs, or exact birth dates are collected. All other data utilized in the study were available in aggregated form only.
: Not Applicable.
: The authors declare that no competing interests exist.