coronavirus, virus, mask, covid, kid, stop, protect, 19, medical, wuhan, face, hand, people, symptoms, air, bad, chinese, corona virus, covid-19, disease, dust, epidemic, flu, gesture, girl, halt, hazard, health, ill, illness, infection, infectious, influenza, little, mers, ncov, negative, no, outbreak, pm 2.5, pollution, prevention, problem, protection, reject, safe, sick, sick child, sickness
