Ключевые слова: backdrop, background, bio, bio hazard, border, border closed, breath, cancelled, concept, contamination, control, corona, coronavirus, covid, covid 19, covid19, customs control, customs service, danger, dangerous, dangerous illness, detected, dies, disease, environment, epidemic, europe, healthcare, illness, medical, medical mask, medicine, ncov, pandemic, passengers, protection, quarantine, rejected, respiratory disease, tourism, transmitted, travel, traveler, vacation, vaccine,