Ключевые слова: adult, aged, allergic, allergy, blanket, blow, blowing, care, caucasian, cold, concept, cough, disease, elderly, epidemic, fever, flu, glasses, health, home, ill, illness, indoors, infection, influenza, male, man, mature, medicine, nose, old, pain, pensioner, people, person, pneumonia, problem, respiratory, retired, rhinitis, senior, sick, sickness, sneeze, sofa, symptom, tissue, unhealthy, unwell, virus,