Ключевые слова: 2020, bacteriological, biological, city, city center, city street, cityscape, clean, cleaning, contagious, corona, corona virus, coronavirus, covid19, dangerous, deadly, disease, disinfecting, disinfection, emergency, epidemic, equipment, exposed, health, illness, infection, lockdown, mask, outdoor, outdoors, pandemic, people, precaution, protection, protective, public service, quarantine, safety, sanitation, service, sports ground, spray, spread, sprinkle, street, suit, team, urban, virus, worker,