Ключевые слова: allergy, biological, care, cartoon, cold, disease, disposable, doctor, dust, face, flat, flu, grippe, health, hospital, hygiene, hygienic, icon, illness, individual, infection, infectious, influenza, laboratory, mask, medical, medicine, nurse, pandemic, personnel, pollution, protection, protective, respiration, respirator, safety, sick, sickness, sign, sterile, style, surgeon, surgical, symbol, virus, visitor,