Certification Board of Infection Control and Epidemiology (CBIC) Practice Exam 2026 – The All-in-One Guide for Exam Success

Indirect contact transmission occurs when infectious agents are transferred from one person to another through an intermediate object or surface, rather than directly through person-to-person contact. The choice that highlights this method is when an individual becomes infected by touching a contaminated surface or object. This pathway exemplifies how germs can survive on surfaces, allowing them to be picked up by someone else who touches those surfaces and then touches their mouth, nose, or eyes.

In contrast, infecting oneself by eating contaminated food represents a form of transmission related to ingestion, not indirect contact. Inhaling respiratory droplets is a direct form of transmission as it involves the direct aerosolization of infectious particles from one person to another. Blood transfusions typically involve direct transmission of pathogens via blood products and do not represent indirect contact, as they entail direct connection to the bloodstream rather than an object or surface.

Thus, the correct example illustrates the concept of indirect contact transmission effectively by emphasizing the role of contaminated surfaces or objects in the spread of infections.