Ключевые слова: airport, avoid, background, building, business hall, care, chair, concept, coronavirus, covid19, disease, distance, empty, floor, health, health care, healthy, hospital, illness infection, inside, interior, medical clinic, medicine, nobody, office, pandemic, people, prevention, preventive, protection, public, quarantine, room, row, safety, seat, seats, sign, social, social distance, social distancing, space, train station, transfer, transport, virus, wait, waiting, waiting room, warning,