Ключевые слова: airport, app, border, certificate, concept, control, diagnostic, disease, document, epidemic, flight, global, health, health care, id, identification, illness, immigration, immune, immunity, immunization, infection, international, medical, medicine, pandemic, pass, passport, prevention, proof, protection, quarantine, risk free, safety, security, test, tourism, tourist, transportation, travel, trip, vacation, vaccination, vaccine, virus,