Ключевые слова: 19, air, allergy, bacteria, bad, biohazard, caution, china, concept, coronavirus, covid19, danger, disease, doctor, dust, epidemic, face, flu, gesture, girl, global, hand, hazard, health, ill, illness, infection, influenza, mask, medical, mers, ncov, negative, outbreak, people, pollution, prevention, problem, protect, protection, reject, safe, safety, sick, sickness, stop, virus, wuhan,