Biohazard Symbol - Universal Warning Sign for Biological Hazards #1424613 (License: Personal Use)

This iconic black trefoil symbol on a bright yellow background is the internationally recognized warning for biological hazards, including viruses, bacteria, and other infectious substances. Designed by Charles Baldwin in 1966, its high-contrast design ensures visibility and immediate recognition in laboratories, medical facilities, and hazardous waste sites. It conveys critical safety information without language barriers.

Used on signage, lab equipment, waste containers, and safety manuals to alert personnel and the public to potential exposure to harmful biological agents; matches user intent for hazard identification, safety training, or regulatory compliance.