Tasks involving SARS-CoV-2 (e.g. viral replication) and persons infected with it, and non-specific activities such as laboratory diagnostics, are covered by existing regulations, particularly by the technical rules for biological agents TRBA 250 and TRBA 100, supplemented by ABAS Decision 609.
www.baua.de/DE/Angebote/Aktuelles/Meldungen/2020/2020-02-19-Coronavirus.html (in german)