Ключевые слова: alert, bed, bedridden, biohazard, clinic, closed, contamination, coronavirus, covid, covid 19, dangerous, disaster, disease, disturbance, emergency, epidemic, fever, flu, hazardous, hazmat, health, home, hospital, illness, indoor, infected, infection, keep out, man, mask, medical, outbreak, pandemic, patient, pneumonia, prevention, protection, quarantine, room, sick, sign, uniform, virus, ward, woman,