Free Practice Questions for CBIC CIC Exam

The gold standard specimen for diagnosing pertussis (Bordetella pertussis infection) is a nasopharyngeal culture because:

B. pertussis colonizes the nasopharynx, making it the best site for detection.

A properly collected nasopharyngeal swab or aspirate increases diagnostic sensitivity.

This method is recommended for culture, PCR, or direct fluorescent antibody testing.

Why the Other Options Are Incorrect?

A. Cough plate – Not commonly used due to low sensitivity.

B. Nares culture – The nares are not a primary site for pertussis colonization.

C. Sputum culture – B. pertussis does not commonly infect the lower respiratory tract.

CBIC Infection Control Reference

APIC confirms that nasopharyngeal culture is the preferred method for diagnosing pertussis​.

The correct answer is D, "Peracetic acid," as this agent is appropriate for the disinfection of bronchoscopes. According to the Certification Board of Infection Control and Epidemiology (CBIC) guidelines, bronchoscopes are semi-critical devices that require high-level disinfection (HLD) to eliminate all microorganisms except high levels of bacterial spores, as they come into contact with mucous membranes but not sterile tissues. Peracetic acid is recognized by the Centers for Disease Control and Prevention (CDC) and the Association for the Advancement of Medical Instrumentation (AAMI) as an effective high-level disinfectant for endoscopes, including bronchoscopes, due to its broad-spectrum antimicrobial activity, rapid action, and compatibility with the delicate materials (e.g., optics and channels) of these devices (CBIC Practice Analysis, 2022, Domain III: Infection Prevention and Control, Competency 3.3 - Ensure safe reprocessing of medical equipment). It is commonly used in automated endoscope reprocessors, ensuring thorough disinfection when combined with proper cleaning and rinsing protocols.

Option A (iodophor) is typically used for intermediate-level disinfection and skin antisepsis, but it is not sufficient for high-level disinfection of bronchoscopes unless specifically formulated and validated for this purpose, which is uncommon. Option B (alcohol) is effective against some pathogens but evaporates quickly, fails to penetrate organic material, and is not recommended for HLD of endoscopes due to potential damage to internal components and inadequate sporicidal activity. Option C (phenolic) is suitable for surface disinfection but lacks the efficacy required for high-level disinfection of semi-critical devices like bronchoscopes, as it does not reliably eliminate all microbial threats, including mycobacteria.

The selection of peracetic acid aligns with CBIC’s emphasis on evidence-based reprocessing practices to prevent healthcare-associated infections (HAIs) associated with endoscope use (CBIC Practice Analysis, 2022, Domain III: Infection Prevention and Control, Competency 3.4 - Implement environmental cleaning and disinfection protocols). This choice ensures patient safety by adhering to manufacturer and regulatory guidelines, such as those in AAMI ST91 (AAMI ST91:2015, Flexible and semi-rigid endoscope processing in health care facilities).

The Certification Study Guide (6th edition) identifies environmental dispersal of microorganisms as the primary reason healthcare construction and renovation activities increase the risk of healthcare-associated infections (HAIs). Construction activities such as demolition, drilling, and ceiling penetration disturb dust and building materials that may harbor fungal spores and other microorganisms, particularly Aspergillus species. Once aerosolized, these organisms can spread through airflow to patient care areas if containment and ventilation controls are inadequate.

The study guide emphasizes that immunocompromised patients—such as those in oncology units, transplant units, and intensive care settings—are especially vulnerable to infections caused by airborne fungi released during construction. Numerous outbreaks of invasive aspergillosis have been linked directly to renovation and construction projects that lacked appropriate infection control risk assessment (ICRA) measures.

The incorrect options describe secondary or contributory issues but are not the primary mechanism of infection risk. While increased personnel traffic, hand hygiene training, and waste handling are important considerations, they do not represent the central hazard posed by construction. The fundamental risk is airborne dissemination of microorganisms from disrupted environmental reservoirs.

CIC exam questions frequently test knowledge of construction-related infection risks and the importance of engineering controls such as negative pressure containment, HEPA filtration, and dust barriers. Recognizing environmental dispersal as the primary risk underscores why rigorous planning and infection control oversight are essential during renovation projects.

Sensitivity describes how well a test correctly identifies people who truly have the disease. It is the proportion of true positives among all people with the disease—i.e., the probability that the test will be positive when the disease is present. CDC training materials describe sensitivity as the ability of a test to correctly identify the presence of disease and connect it to true positives and false negatives, with the standard formula: Sensitivity = TP / (TP + FN).

Therefore, the correct definition is “with the disease who have a positive test” (Option A). Option B describes false negatives (people who have disease but test negative). Option C describes false positives (people without disease who test positive). Option D corresponds to specificity, which is the proportion of people without the disease who test negative (TN / [TN + FP]).

In infection prevention and control, understanding sensitivity is essential when selecting and interpreting screening or diagnostic tests (e.g., for outbreak investigations or surveillance), because low sensitivity increases missed cases (false negatives), potentially allowing ongoing transmission if cases are not recognized promptly.

A process indicator measures whether staff are reliably performing evidence-based practices that prevent infection (i.e., how well we do what we intend to do). For CAUTI prevention, a core, guideline-supported strategy is to use indwelling urinary catheters only for appropriate indications and remove them as soon as they are no longer needed. Because inappropriate placement is a major driver of unnecessary catheter days (and therefore CAUTI risk), tracking whether the clinical indication is documented at insertion is a practical, auditable process measure that directly reflects adherence to appropriate-use policies. The CDC CAUTI prevention toolkit lists “compliance with documentation of catheter …” as an example of a process measure, aligning with performance measurement approaches recommended for CAUTI prevention.

In contrast, the CAUTI rate (option B) is an outcome measure, not a process measure. “Reduction of catheter insertions per month” (option C) reflects volume/usage trends rather than direct compliance with a specific practice, and “rate of asymptomatic bacteriuria” (option D) is not a recommended target metric for CAUTI prevention and routine screening for ASB is discouraged in CAUTI guidance.

The CBIC Certified Infection Control Exam Study Guide (6th edition) states that cytomegalovirus (CMV) is a common virus transmitted through direct contact with body fluids, including saliva, urine, blood, and respiratory secretions. In healthcare settings, Standard Precautions are sufficient to prevent CMV transmission, even for pregnant healthcare personnel.

Importantly, routine reassignment, work restriction, or removal from patient care is not recommended for pregnant HCP caring for patients with CMV, including those in the first trimester. The Study Guide emphasizes that the most effective preventive measure is strict adherence to Standard Precautions, particularly hand hygiene and appropriate use of personal protective equipment when contact with body fluids is anticipated. These measures have been shown to significantly reduce the risk of CMV acquisition.

Option A is incorrect because there is no indication for immediate post-exposure evaluation in the absence of a recognized exposure such as a needlestick or mucous membrane contact. Option B is not supported by evidence or guidelines and may contribute to unnecessary workforce restrictions. Option D is insufficient and misleading, as CMV is not transmitted via the airborne route and masking alone does not address the primary transmission risks.

For CIC® exam preparation, it is critical to recognize that education and reinforcement of Standard Precautions—not work exclusion—are the cornerstone of CMV prevention for pregnant healthcare workers.

The correct answer is D, "Having the family members demonstrate ways to prevent CDI transmission," as this educational format involves active learning. According to the Certification Board of Infection Control and Epidemiology (CBIC) guidelines, active learning engages learners through participation, practice, and application of knowledge, which is more effective for skill development and behavior change compared to passive methods. In this context, having family members demonstrate techniques—such as proper hand hygiene, use of personal protective equipment (PPE), or environmental cleaning—requires them to actively apply the information, reinforcing understanding and retention (CBIC Practice Analysis, 2022, Domain IV: Education and Research, Competency 4.1 - Develop and implement educational programs). This hands-on approach also allows the infection preventionist to provide immediate feedback, ensuring correct practices to prevent CDI transmission, which is critical given the spore-forming nature of Clostridioides difficile.

Option A (providing a brief 10-minute lecture on ways to prevent CDI transmission) is a passive learning method where information is delivered to the audience without requiring their active participation, limiting its effectiveness for skill-based learning. Option B (distributing a pamphlet describing ways to prevent CDI transmission) is also passive, relying on the family to read and interpret the material independently, which may not ensure comprehension or application. Option C (watching a 5-minute YouTube video demonstrating ways to prevent CDI transmission) is a more engaging passive method, as it provides visual and auditory learning, but it still lacks the interactive component of active participation or demonstration.

The focus on active learning aligns with CBIC’s emphasis on tailoring educational programs to promote practical skills and sustained behavior change, which is essential for infection prevention among families of CDI patients (CBIC Practice Analysis, 2022, Domain IV: Education and Research, Competency 4.2 - Evaluate the effectiveness of educational programs). This approach supports the goal of reducing transmission risks in both healthcare and home settings.

The proper use of chemical disinfectants is a critical aspect of infection control, as outlined by the Certification Board of Infection Control and Epidemiology (CBIC). Chemical disinfectants are used to eliminate or reduce pathogenic microorganisms on inanimate objects, and their effective application requires adherence to specific protocols to ensure safety and efficacy. Let’s evaluate each option based on infection control standards:

A. All items to be processed must be cleaned prior to being submerged in solution.: This statement is a fundamental principle of disinfectant use. Cleaning (e.g., removing organic material such as blood, tissue, or dirt) is a prerequisite before disinfection because organic matter can inactivate or reduce the effectiveness of chemical disinfectants. The CBIC emphasizes that proper cleaning is the first step in the disinfection process to ensure that disinfectants can reach and kill microorganisms. This step is universally required for all levels of disinfection (low, intermediate, and high), making it a characterizing feature of proper use.

B. The label on the solution being used must indicate that it kills all viable micro-organisms.: This statement is misleading. No disinfectant can be guaranteed to kill 100% of all viable microorganisms under all conditions, as efficacy depends on factors like contact time, concentration, and the presence of organic material. Disinfectant labels typically indicate the types of microorganisms (e.g., bacteria, viruses, fungi) and the level of disinfection (e.g., high-level, intermediate-level) they are effective against, based on standardized tests (e.g., EPA or FDA guidelines). Claiming that a solution kills all viable microorganisms is unrealistic and not a requirement for proper use; instead, the label must specify the intended use and efficacy, which varies by product.

C. The solution should be adaptable for use as an antiseptic.: An antiseptic is a chemical agent used on living tissue (e.g., skin) to reduce microbial load, whereas a disinfectant is used on inanimate surfaces. While some chemicals (e.g., alcohol) can serve both purposes, this is not a requirement for proper disinfectant use. The adaptability of a solution for antiseptic use is irrelevant to its classification or application as a disinfectant, which focuses on environmental or equipment decontamination. This statement does not characterize proper disinfectant use.

D. A chemical indicator must be used with items undergoing high-level disinfection.: Chemical indicators (e.g., test strips or tapes) are used to verify that the disinfection process has met certain parameters (e.g., concentration or exposure time), particularly in sterilization or high-level disinfection (HLD). While this is a recommended practice for quality assurance in HLD (e.g., with glutaraldehyde or hydrogen peroxide), it is not a universal requirement for all chemical disinfectant use. HLD applies specifically to semi-critical items (e.g., endoscopes), and the need for indicators depends on the protocol and facility standards. This statement is too narrow and specific to characterize the proper use of chemical disinfectants broadly.

The correct answer is A, as cleaning prior to disinfection is a foundational and universally applicable step in the proper use of chemical disinfectants. This aligns with CBIC guidelines, which stress the importance of a clean surface to maximize disinfectant efficacy and prevent infection transmission in healthcare settings.

CBIC Infection Prevention and Control (IPC) Core Competency Model (updated 2023), Domain IV: Environment of Care, which mandates cleaning as a prerequisite for effective disinfection.

CBIC Examination Content Outline, Domain III: Prevention and Control of Infectious Diseases, which includes protocols for the proper use of disinfectants, emphasizing pre-cleaning.

CDC Guidelines for Disinfection and Sterilization in Healthcare Facilities (2021), which reinforce that cleaning must precede disinfection to ensure efficacy.

Chickenpox (varicella) is primarily spread through airborne transmission, and exposure is defined by being in the same airspace with a contagious person (from 1-2 days before rash onset until lesions are crusted), even if briefly.

The APIC Text states:

“Significant exposure is defined as being in the same room or airspace during the period of infectivity, regardless of duration”.

This reflects airborne precaution definitions and CDC exposure management guidelines for varicella.

The Certification Study Guide (6th edition) outlines a structured approach to outbreak investigation, emphasizing that the first step is to verify the problem and establish baseline facts before initiating control measures. When an infection preventionist becomes aware of potential clustering—such as multiple newborn readmissions with staphylococcal infections—the initial priority is to review the medical records of the affected cases.

Reviewing records allows the IP to confirm diagnoses, identify common organisms, determine timing of symptom onset, and assess potential epidemiologic links (e.g., same nursery, staff exposure, procedures, or length of stay). This step helps determine whether the cases represent a true outbreak, coincidental community-acquired infections, or unrelated events. The study guide stresses that interventions should not begin until the problem is clearly defined, as premature actions may waste resources or obscure the true source.

The other options are appropriate later steps in an investigation. Observing practices and obtaining surveillance cultures are targeted control measures that should follow confirmation of an outbreak and hypothesis generation. Beginning prospective surveillance is also important, but only after case definitions and baseline data are established.

CIC exam questions frequently test sequencing of outbreak investigation steps. Recognizing that case confirmation and record review come first is essential for effective infection prevention decision-making and accurate epidemiologic analysis.