request to wear a mouth and nose protector at the entrance to a shop

ban care caution cautious contagion corona coronavirus covid covid19 customer danger dangerous decision demarcation disease disorder entrance epidemic face fear germany health hygiene ill illness indicating indication infection label mask measure medical medicine mouth nose oronasal pandemic pathogen precaution precautionary protection protector quarantine regulation request requirement respirator respiratory restriction risk rules safe safety sars security shop shopping sign signage symptom transmission virus wear