Ключевые слова: adult, air pollution, allergy, avian flu virus, caucasian, city, city life, epidemic, exhaustion, face, fear, fever, flu, flu virus, healthcare, hygiene, illness, infection, mask, outdoors, people, pollution, pollution mask, portrait, protection, protective, sadness, safety, serious, social issues, street, stress, swine influenza virus, unhygienic, vaccine, viral, virus, wearing, woman, worried, young adult, young women,