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Article History

Received: 4 July 2022

Accepted: 12 January 2023

First Online: 3 February 2023

Declarations

:

: For these studies, the “Aerztekammer Niedersachsen” issued an ethical approval in August 2020 (No. Bo/30/2020; Bo/31/2020; Bo/32/2020). All methods were carried out in accordance with relevant guidelines and regulations. Study subjects belonged to three different groups located in the southern part of Lower Saxony, Germany: The first group, defined as “education/culture,” included employees from universities, theater, and administration in and close to Hannover, Germany. The second group, defined as “company,” consisted of employees of a biotechnological company in Goettingen, Germany. The third group included both employees and residents of retirement and nursing homes as well as schools in and close to Hannover (designated as “nursing homes”). Informed consent was obtained from all subjects and/or their legal guardian(s).

: Not applicable.

: The authors declare no conflict of interest. The sponsor did not exert any influence or make any recommendation as to which groups of people should be tested. The offer of testing was requested by various institutions or groups of persons themselves.