Biohazard Symbol | Universal Warning Sign for Biological Hazards #226860 (License: Personal Use)

This iconic symbol, created in 1966 by Charles Baldwin at Dow Chemical, consists of three overlapping circles with a central dot and curved arcs, forming a trefoil shape. It was intentionally designed to be memorable, non-representational, and universally recognizable across cultures and languages. Today, it appears on containers, lab doors, medical waste bags, and safety signage to denote biological hazards including pathogens, toxins, and genetically modified organisms.

Used primarily in scientific, medical, and industrial settings to signal the presence of biological hazards; matches user intent for safety compliance, hazard identification, educational content, or regulatory guidance.