Ключевые слова: adenovirus, building, calcitonin, city, concept, coxsackievirus, face, female, girl medical mask, girl wears mask, glass, group, health, holding, influence, mask, medical, medical mask, mirror, outside, pandemic, portrait, prevention, protection, quarantine, reflecting, respiratory, sad, sars, skin, street, student, teenage, urban, virus, wearing, window, woman, young, youth,