Ключевые слова: 3d rendering, ban, biohazard, black, block, bones, border, caution, closed, closure, contagious, control, coronavirus, covid19, crossbones, danger, dangerous, deadly, death, epidemic, epidemy, evening, fence, flag, gloomy, hazard, healthcare, infection, infectious, isolation, jolly roger, no entry, no way, outbreak, prevent, prohibit, prohibition, protect, protection, quarantine, restrict, restriction, sign, skull, sky, stop, sunset, virus, warn, warning,