Ключевые слова: alert, architecture, area, attention, bacteria, barricade, barrier, biohazard, biological, blur, border, buildings, care, caution, city, cityscape, concept, cordon, country, danger, dangerous, epidemic, europe, fence, health, illness, infection, isolation, italy, line, medicine, monument, pandemic, prohibition, protection, quarantine, ribbon, sign, stop, symbol, tape, territory, tower, venice, virus, warning, yellow, zone,