The CoronaEinreiseV (Coronavirus-Einreiseverordnung – Coronavirus Entry Ordinance) regulates
nationally what travellers returning to Germany have to do particularly regarding possible quarantine
and self-isolation requirements. For more information, please visit this website:
A current list indicating areas of virus variants and of high risk is provided by the Robert Koch Institute:
https://www.rki.de/DE/Content/InfAZ/N/Neuartiges_Coronavirus/Risikogebiete_neu.html

Picture: gemeinfrei