Common Infectious Diseases PNLE Questions

Introduction

The live Tangerine inventory for Common Infectious Diseases contains 73 original PNLE-style practice questions. This page uses those questions to rehearse recognition and action when a named infection appears in community, home, childcare, or exposure settings.

Its canonical scope covers named infections not assigned to a more specific infectious-disease topic. Practice decisions include assessing severity, identifying a meaningful exposure, choosing immediate source-control or referral actions, coordinating postexposure care, and teaching measures that interrupt further illness. It does not replace Communicable Disease Basics or Mosquito-Borne Diseases, which handle their assigned scope.

Common Infectious Diseases is a Tangerine pedagogical lens within NP3, Community Health. It maps across relevant competencies in the official five-subject PNLE TOS and is not a separate official test subject. The 2025 Enhanced TOS sets broad competency relationships, so it does not provide a guaranteed microtopic weight or fixed number of Common Infectious Diseases questions on an exam form.

Key concepts

Escalate worsening respiratory infection
Recognize: A client with COVID-19 or another respiratory illness who develops increasing work of breathing, altered mental status, inability to maintain hydration, or concerning oxygenation findings needs reassessment.
Decide: Prioritize airway, breathing, circulation, focused assessment, appropriate precautions, and timely escalation according to the client’s condition and local protocol.
Avoid: Waiting for fever to become severe or treating a diagnostic label as more important than current respiratory and neurologic findings.
Judge a rabies exposure
Recognize: A bite, scratch, or saliva contact with broken skin or a mucous membrane is clinically different from contact with intact skin.
Decide: Begin immediate wound cleansing when applicable, document the exposure, and arrange prompt professional assessment for postexposure management.
Avoid: Dismissing a small wound, relying only on the animal’s appearance, or delaying referral while waiting for symptoms.
Separate rabies immunoglobulin from vaccine roles
Recognize: Rabies immunoglobulin provides passive antibody protection, while rabies vaccine stimulates an active immune response; their use depends on the exposure and prior vaccination history.
Decide: Verify the ordered product, timing, route, and administration sites, and coordinate the complete plan with the authorized provider or protocol.
Avoid: Mixing the products, substituting one for the other, or assuming that receiving one component makes the other unnecessary.
Act on fever after floodwater exposure
Recognize: Fever or systemic symptoms after contact with floodwater, wet soil, or contaminated surroundings create an exposure history that can change the urgency of evaluation.
Decide: Ask about the timing and type of exposure, assess current severity, and refer promptly for clinical evaluation when illness is present.
Avoid: Labeling the illness as an ordinary fever without considering the exposure or advising self-treatment in place of assessment.
Control Shigella risk in childcare
Recognize: Diarrhea among children or staff can spread through contaminated hands, diapering activities, shared surfaces, and unsafe food handling.
Decide: Reinforce soap-and-water handwashing, safe diapering, environmental cleaning, appropriate food practices, and current illness-exclusion or public-health instructions.
Avoid: Focusing on the symptomatic child alone while overlooking caregivers, surfaces, shared items, and the need for coordinated follow-up.
Use source control for suspected measles
Recognize: A compatible febrile rash illness with respiratory symptoms requires attention to exposure risk before the client enters a crowded healthcare setting.
Decide: Limit contact with others, use the prescribed respiratory precautions, call ahead before referral, and coordinate with the appropriate health authority or clinical team.
Avoid: Sending the client to a waiting room without warning or treating home isolation as complete when household source-control measures are absent.
Respond to a respiratory illness cluster
Recognize: Multiple linked respiratory illnesses in a daycare or community setting require assessment of time, place, person, symptoms, and possible shared exposure.
Decide: Identify symptomatic people, apply appropriate precautions, document the cluster, and notify the responsible infection-control or public-health contact according to procedure.
Avoid: Naming the pathogen from the cluster alone or waiting for every case to be laboratory-confirmed before starting reasonable control actions.

What to expect on the PNLE

The inventory supports decision-centered forms such as priority action, next nursing step, exposure assessment, home-isolation teaching, source-control selection, postexposure coordination, and escalation for worsening illness. Representative contexts include COVID-19 respiratory deterioration, rabies saliva exposure and combined postexposure management, fever after floodwater contact, Shigella control in childcare, measles isolation, and respiratory illness clusters.

The live difficulty distribution is easy 43, medium 17, and hard 13. Its Bloom distribution is remembering 37, applying 20, evaluating 10, analyzing 4, and understanding 2, so preparation should combine disease-specific recall with application and evaluation of safety priorities. Exact topic distribution varies by exam form; this inventory does not predict how many questions any microtopic will receive.

Remembering: retrieve the distinguishing action linked to a named infection or exposure.
Applying: transfer that action to a home, daycare, community, or clinical scenario.
Evaluating: compare options by urgency, exposure significance, source control, and risk of further harm.
Analyzing: connect symptoms, setting, timing, and contacts before selecting the safest response.

Study tips

Begin with diagnostic practice. Complete a short mixed set from the 73-question inventory without checking notes first. For every response, mark whether the difficulty came from recognizing the infection, judging the exposure, selecting the first action, or deciding when to escalate.
Use focused retrieval by infection and setting. Build a comparison grid with these columns: context, cue that changes the decision, first nursing action, escalation or teaching point. Populate it with COVID-19 respiratory worsening, rabies exposure, rabies immunoglobulin and vaccine, floodwater-associated fever, Shigella in childcare, and measles home isolation.
Review the rationale and the error. For each missed or guessed item, write the decisive cue, the unsafe distractor, and the safety principle that supports the correct option. Keep separate notes for exposure assessment, source control, postexposure coordination, and urgent respiratory assessment.
Retry with spacing. Re-answer missed items later that day, several days later, and again after a new mixed set. On each retry, explain the decision aloud before looking at the answer so recall becomes connected to action rather than to the wording of one question.
Finish with mixed timed practice. Combine Common Infectious Diseases items with other NP3 competencies and other official PNLE subject contexts. After timing ends, review reasoning and prioritization, not only the final score, and update the comparison grid when a new cue changes your plan.

Common mistakes to avoid

Using fever as the main triage signal in COVID-19. Respiratory effort, oxygenation findings, hydration, and mental status are stronger cues for escalation. Reassess the client’s current condition instead of waiting for a temperature threshold.
Calling saliva exposure harmless because there is no deep bite. Saliva contacting broken skin or a mucous membrane can require rabies assessment. Clean the area promptly and obtain postexposure guidance rather than judging risk by wound size alone.
Confusing rabies immunoglobulin with rabies vaccine. They serve different immune functions and are not interchangeable. Verify the complete prescribed plan, including product handling and administration details, instead of selecting whichever intervention sounds more familiar.
Ignoring floodwater history when a client has fever. The exposure can redirect the assessment toward a potentially serious water-associated infection. Ask when and how contact occurred, assess severity, and refer for evaluation when systemic illness is present.
Applying hand hygiene advice without addressing the childcare environment. Shigella control also requires attention to diapering, shared surfaces, food practices, symptomatic children or staff, and coordinated instructions. Correct the whole chain of risk rather than teaching one behavior in isolation.
Sending a suspected measles case into a clinic or treating a cluster as self-explanatory. Call-ahead communication, source control, and timely coordination reduce additional exposure, while a cluster still requires assessment rather than an assumed diagnosis. Use the epidemiologic information to guide action without claiming confirmation.

Try a question

A real Common Infectious Diseases question from our bank. Give it a shot.

Hard

Which finding in a client with suspected COVID-19 requires the most urgent escalation?

A

New confusion with difficulty staying awake and visibly increased work of breathing.

B

Persistent fever with worsening cough and oxygen saturation of 94% at rest.

C

Pleuritic discomfort during coughing with normal heart rate, alertness, and breathing.

D

Two episodes of vomiting with mild orthostatic dizziness and reduced oral intake.

Rationale

Option A, new confusion with difficulty staying awake and visibly increased work of breathing, signals an urgent and potentially life-threatening complication of COVID-19: acute hypoxemic respiratory failure and possible evolving sepsis. Both confusion (altered mental status) and increased work of breathing are "red flag" symptoms that indicate hypoxia is compromising cerebral and respiratory function. Early identification and prompt escalation, such as calling for emergency medical support, are essential to prevent further deterioration such as respiratory arrest.

Option	Why It's Incorrect
B	Persistent fever and worsening cough with an O2 saturation of 94% is concerning, but the patient is not yet hypoxic by standard diagnostic criteria (hypoxia usually defined as <94%). This patient should be closely monitored and likely needs medical review, but does not exhibit acute life-threatening symptoms requiring immediate escalation like altered mentation or marked respiratory distress.
C	Pleuritic discomfort on coughing, with normal vital signs, alertness, and no increased work of breathing, does not indicate a current life-threatening or rapidly deteriorating situation. While bothersome, this symptom alone does not require urgent escalation and can be managed with outpatient guidance and monitoring.
D	Two episodes of vomiting and mild orthostatic dizziness suggest possible mild dehydration. Although intervention and follow-up are needed (oral rehydration, monitoring for worsening), these findings do not reflect immediate threats to airway, breathing, or neurological function.

Key Clinical Pearl: In any case of COVID-19 (or similar respiratory illnesses), changes in level of consciousness and evidence of respiratory distress are always prioritized for emergency escalation due to the potential for rapid decompensation. Regular assessment of mentation, work of breathing, and oxygen saturation is central to safe community-level triage.

Nursing assessment skills here align with national and international protocols for case management of COVID-19 in the community, emphasizing early recognition of severe disease progression.

Maglaya, A. S. (Ed.). (2009). Nursing Practice in the Community (5th ed.). Argonauta Corporation.
Silvestri, L. A. (2017). Saunders Comprehensive Review for the NCLEX-RN Examination (7th ed.). Elsevier.

References and further reading

PRC Enhanced Table of Specifications for the Nurses Licensure Examination official
The current public competency and cognitive-level blueprint, effective from the November 2025 NLE onward.
Tangerine Prep PNLE Reviewer question bank
The live source for the published question count, question previews, rationales, and inventory distributions on this page.

How this page is built

The counts and distributions on this page come from Tangerine Prep's live published question bank. The source inventory was last updated on August 12, 2026.

The questions are original PNLE-style practice items, not recalled or leaked board questions. Topic scope follows Tangerine's pedagogical taxonomy and is mapped to the PRC 2025 Enhanced Table of Specifications, effective from the November 2025 NLE onward. Exact topic distribution varies by exam form.