Ключевые слова: 3d, background, bus, city, cityscape, contagious, crisis, crowded, danger, delta, disease, epidemic, flu, illness, illustration, infected, infection, line, many, mask, massive, mutation, outbreak, overcrowded, pandemic, passenger, people, public, quarantine, queue, sars, station, stop, street, tourism, town, transport, transportation, travel, urban, variant, virus, waiting, walking,