Ключевые слова: ache, adult, allergic, allergy, alone, bad, blow, blowing, care, cold, couch, cough, disease, epidemic, fever, flu, guy, handkerchief, health, health care, hispanic, home, ill, indoor, infection, isolated, male, man, nose, pain, person, problem, runny, sad, sick, sitting, sneeze, sneezing, sofa, symptom, temperature, tissue, trouble, unhealthy, unwell, virus, young,