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

The selection identifying the three most common causes of hospital-acquired infections (HAIs) is based on key factors that contribute significantly to the risks associated with these infections in hospital settings.

Contamination or defects on medical products and devices play a crucial role in HAIs. Devices such as catheters, ventilators, and surgical instruments can become sources of infection if they are not properly sterilized or if they are defective. These products can introduce pathogens directly into the body or compromise the body’s natural defenses, leading to infections.

Lapses in infection prevention practices are another major contributor. Despite the implementation of guidelines intended to protect patients, procedural breakdowns can occur. This can include failure to follow hand hygiene protocols, inadequate use of personal protective equipment, improper cleaning of surfaces or equipment, and neglect of patient isolation protocols. These lapses can provide pathways for pathogens to enter the sterile environments intended to protect vulnerable patients.

Colonization or infection of healthcare personnel is also critical. Healthcare workers can serve as vectors for pathogens if they are colonized with bacteria or viruses and do not employ appropriate infection control measures. This situation can lead to the transmission of infectious agents between patients, particularly vulnerable individuals who are more susceptible to infections.

Understanding these causes helps healthcare providers focus their