Ключевые слова: alert, background, contagious, corona, coronavirus, covid19, danger, dangerous, disease, doctor, double, exposure, flu, gesture, glove, hands, hazmat, health, healthcare, hospital, illness, infection, infectious, information, map, medical, medicine, mutation, new, omicron, outbreak, pandemic, person, prevention, protection, protective, scientist, show, sickness, spread, stop, suit, symptom, text, transmission, virus, warning, word, worker, world,