Biohazard Symbol - Universal Warning Sign for Biological Hazards #1821217 (License: Personal Use)

This image displays the standardized biohazard warning symbol: a red trefoil (three interlocking circles) centered within a black-bordered equilateral triangle on a white background, with the word “BIOHAZARD” in bold black capital letters beneath it. Designed in 1966 by Charles Baldwin at the U.S. Department of Health, Education, and Welfare, the symbol was created to be unmistakable, memorable, and culture-neutral for global use in laboratories, medical facilities, and waste handling. It signifies the presence of potentially infectious agents, toxins, or other biological materials requiring special precautions.

Used on containers, doors, equipment, and signage in healthcare, research labs, and waste disposal to alert personnel and the public to biological hazards; matches user intent for safety education, regulatory compliance, or hazard identification resources.