Biohazard Symbol - Universal Warning Sign for Biological Hazards #1994840 (License: Personal Use)

This high-contrast biohazard symbol features a bright yellow equilateral triangle enclosing a black trefoil (three-bladed) design, universally recognized as a warning for biological hazards. Developed in 1966 by Charles Baldwin, the symbol is intentionally abstract to avoid cultural bias and ensure immediate recognition across languages. It appears on containers, signage, and protective equipment where infectious agents, toxins, or medical waste pose risk.

Used in healthcare, research labs, waste management, and public safety contexts to alert personnel and the public to potential exposure to harmful biological substances; matches user intent for hazard identification, safety compliance, or educational reference.