Bloodborne Pathogen is defined as microorganisms present in human blood that can cause disease?

• A. Microorganisms present in air that cause disease.
• B. Microorganisms present in water that can cause disease.
• C. Microorganisms present in soil that can cause disease.
• D. Microorganisms present in human blood that can cause disease.

Answer: (D)

Bloodborne pathogens are infectious microorganisms carried in human blood that can cause disease. This definition focuses on the blood as the medium of transmission and the potential to cause illness, which is what makes them a concern for exposure in healthcare and related settings. Microorganisms in air, water, or soil are environmental sources, not the bloodborne category, so they don’t define this term. In practice, pathogens like HIV, hepatitis B, and hepatitis C are classic examples because they can be transmitted through blood contact. So describing them as microorganisms present in human blood that can cause disease is the correct framing.