Ключевые слова: ache, adults, ail, air, allergic, allergies, allergy, annoyed, bad, blowing, blows, boy, care, city, cold, complaining, contagion, coryza, cough, coughing, covering, discomfort, disease, epidemic, epidemy, flu, grippe, guy, hand, health, healthcare, ill, illness, infection, influenza, leave, male, man, mouth, mucus, nature, nose, outdoor, outside, pain, paper, park, people, person, pollen, season, sick, sickness, sneeze, sneezing, sniff, snot, spring, suffering, summer, symptom, teen, teenager, tissue, tourist, trees, urban, using, virus, young,