Ключевые слова: adult, air, airline, airport, area, asian, bird, city, disease, ebola, environment, environmental, epidemic, face, fear, female, flu, girl, health, human, hygiene, ill, illness, infection, infectious, influenza, international, man, mask, mers, noibai, outbreak, people, person, pollution, prevention, protection, protective, public, safety, station, surgical, swine, transmittable, transport, transportation, vietnam, virus, wear, wearing,