Ключевые слова: app, background, banner, border, business, care, certificate, check, concept, control, disease, document, epidemic, europe, face, flight, green, health, holiday, identification, immune, immunity, immunization, lockdown, marketing, mask, medicine, mobile, pandemic, passport, pcr, people, qr code, smartphone, sunburst, surveillance, technology, test, tourism, travel, vacation, vaccination, vaccine, virus, web, world map,