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Ключевые слова:
abstract, airborne, anatomy, background, bronchi, bronchiectasis, care, chest, concept, concern, coronavirus, cough, danger, day, design, disease, doctor, epidemic, equipment, face, health, healthy, illness, lifestyle, lung, mask, medical, medicine, network, oxygen, person, pneumonia, prevention, protection, quarantine, respiratory, safety, science, sick, sneezing, symbol, symptom, syringe, tuberculosis, virus, white, world,