Ключевые слова: ache, air, allergic, allergy, care, clinic, clinical, contagion, cough, danger, disease, dust, epidemic, face, fever, flu, grippe, health, healthy, human, hygiene, ill, illness, infected, infection, influenza, man, mask, medical, medicine, pandemic, patient, people, pollution, protect, protection, protective, quarantine, safety, sick, sickness, sore, symptom, temperature, treatment, unwell, viral, virus,