Ключевые слова: adult, air, beautiful, caucasian, city, cold, contagious, disease, epidemic, face, female, flu, girl, health, illness, infection, infectious, influenza, lady, lifestyle, mask, medical, medicine, outbreak, outdoor, outdoors, people, person, pneumonia, pollution, portrait, prevention, protect, protection, protective, quarantine, safety, sars, sick, smartphone, smog, street, urban, virus, walking, wearing, woman, young,