A victim exhibits symptoms of feeling dizzy and having difficulty breathing after exposure to an unknown substance; this observation indicates a biological agent.

• A. False
• B. True
• C. Not enough information
• D. Other symptoms

Answer: (A)

Dizziness and difficulty breathing after exposure to an unknown substance are nonspecific signs that can result from many hazards, not just biological agents. A biological agent refers to organisms or toxins produced by living organisms, and such threats are identified by factors beyond immediate symptoms, like the nature of the exposure, scene indicators, incubation patterns, and laboratory confirmation. Because you don’t have information that uniquely points to a living organism or a toxin produced by one, you can’t conclude it’s a biological agent from these symptoms alone. In practice, treat unknown exposures as potentially hazardous and follow proper scene control, PPE, and decontamination while gathering more information.