Ключевые слова: alert, bacteriological, beware, biohazard, biologic, biological, black, coronavirus, danger, dangerous, doctor, epidemic, face mask, forbidden, hand, hazard, horizontal, hospital, infection, isolated, isolation, laboratory, male, man, medical, no trespassing, omicron, one, outbreak, people, person, prohibiting passage, protection, protection suit, protective, protective glasses, protective gloves, quarantine, restricted area, risk, sign, signal, stop, symbol, unrecognizable, virus, warning, zone,