Biohazard Symbol - Official Warning Sign for Biological Hazards #1688967 (License: Personal Use)

This iconic trefoil-shaped symbol, composed of three interlocking arcs radiating from a central circle, was developed by Charles Baldwin in 1966 for the U.S. Centers for Disease Control. Its fluorescent green color ensures maximum visibility against dark backgrounds, making it ideal for labeling contaminated equipment, waste containers, and restricted zones in healthcare, research, and industrial settings.

Used on signage, lab equipment, medical waste bags, and safety documentation to warn of biological risks; matches user intent for hazard identification, safety compliance, or educational reference.