Ключевые слова: access, alert, applying, asian, attention, banner, beware, caution, clinic, contamination, coronavirus, covid19, crisis, danger, disease, door, emergency, epidemic, forbidden, frontline, health, hospital, indian, infection, isolation, message, notice, outbreak, pandemic, poster, protection, protective, quarantine, restricted, restriction, risk, safety, secure, security, shield, sign, signage, stay away, symbol, virus, warning, worker, zone,