Biohazard Symbol - Universal Warning Sign for Biological Hazards #1688760 (License: Personal Use)

This standardized biohazard symbol features a black trefoil (three-lobed) shape on a bright yellow background, designed for high visibility and immediate recognition. Created in 1966 by Charles Baldwin, it conveys the presence of biological substances that pose a threat to human health, such as viruses, bacteria, or toxins. It is universally used in laboratories, medical waste containers, and biosafety signage to enforce hazard awareness and regulatory compliance.

Used on lab doors, medical waste bins, PPE packaging, and safety manuals; matches user intent for identifying, understanding, or implementing biosafety measures in healthcare, research, or emergency response settings.