Ключевые слова: 3d, alert, area, asia, attention, bacteria, barrier, biohazard, biological, blur, border, buildings, care, caution, center, city, concept, coronavirus, country, covid19, danger, dangerous, disease, district, epidemic, evening, fence, health, hong kong, illness, infection, isolation, line, medicine, night, pandemic, prohibition, protection, quarantine, rendering, sign, skyscraper, stop, symbol, tape, territory, virus, warning, yellow, zone,