Ключевые слова: alert, awareness, biohazard, biological, black, caution, circle, contamination, control, danger, design, disease, doodle, drawing, emergency, epidemic, graphic, hazard, health, illustration, infectious, isolated, laboratory, medicine, outbreak, pandemic, prevention, protection, quarantine, research, risk, safety, science, scribble, security, sign, sketch, symbol, toxic, treatment, virus, warning, white,