Ключевые слова: airport, border, card, care, certificate, check, concept, control, corona, coronavirus, covid, covid19, crisis, digital, disease, document, flight, health, health passport, healthcare, holiday, illness, immigration, immune, immunity, immunization, infection, international, medical, medicine, outbreak, pandemic, passport, prevention, protection, quarantine, risk free, safety, security, technology, test, tourism, tourist, travel, traveler, vacation, vaccination, vaccine, virus,