epa08811619 A sign 'Face mask obligation' in the city centre of Duesseldorf, Germany, 10 November 2020. On 09 November the Administrative Court of Muenster decided that the general decree of the city of Duesseldorf concerning the obligation to wear masks in the city area is illegal. Throughout Germany, the number of cases of the COVID-19 disease caused by the SARS-CoV-2 coronavirus is rising.  EPA/FRIEDEMANN VOGEL