https://www.land.nrw/sites/default/files/asset/document/2021-02-19_coronaschvo_ab_22.02.2021_lesefassung_mit_markierungen.pdf?fbclid=IwAR16A0Oz8STIPVh2VVl2XSkojJ4scVEGlJuRyq-g7AaQlWk_bA80SXJ0bpE