Ключевые слова: background, bag, ban, border, care, concept, corona, coronavirus, covid, disease, epidemic, flight, flu, flying, foreign, global, health, holiday, infection, influenza, international, limiting, mask, measure, medical, ncov, pandemia, pneumonia, prevention, protection, quarantine, respirator, restriction, spread, stop, suitcase, taboo, tour, travel, travelling, trip, vacation, virus, world,