What defines a blood borne pathogen?

Blood borne pathogens are specifically defined as infectious microorganisms present in human blood that can lead to diseases in humans. This definition encompasses viruses, bacteria, and other infectious agents that can be transmitted through the blood, such as HIV, hepatitis B, and hepatitis C. Understanding this definition is crucial for anyone working in health and beauty services, as it informs safety practices and the necessary precautions to reduce the risk of transmission during procedures that may involve blood exposure.

The other options do not accurately describe blood borne pathogens. Airborne pathogens pertain to viruses or bacteria that spread through the air, while substances causing skin infections do not necessarily need to be blood borne. Pathogens found in saliva, although potentially infectious, are distinct from those transmitted through blood. Therefore, recognizing that blood borne pathogens specifically relate to infectious substances present in blood is essential for safety and health standards in any esthetic practice.