Ключевые слова: ache, adult, allergic, allergy, bacteria, blowing, boy, care, caucasian, cold, complaining, contagious, coughing, discomfort, disease, epidemic, epidemy, face, flu, grippe, guy, hand, health, healthcare, home, house, ill, illness, indoor, infection, influenza, male, man, mucus, nose, pain, people, person, sick, sickness, sneeze, snot, suffering, symptom, tissue, unwell, virus, winter, young, youth,