Isolation of a child with measles belongs to which level of prevention?

NVS Staff Nurse - 2019

Community Health Nursing

Medium

Appeared in: NVS Staff Nurse - 2019

Explanation

Primary prevention.
Primary prevention aims to prevent the occurrence of a disease before it starts.
Isolating an infected individual is a specific protection measure that prevents the transmission of the infectious agent (measles virus) to susceptible contacts in the community.
While the child is already sick, the act of isolation serves to protect the health of others, thus preventing new cases, which is the essence of primary prevention for the population.

Option A: Secondary prevention focuses on early diagnosis and prompt treatment of a disease that has already occurred to slow its progression. Examples include screening tests or treating a measles patient with Vitamin A to prevent complications.
Option B: Tertiary prevention involves actions taken to reduce disability and rehabilitate individuals who have already experienced complications from a disease. It focuses on managing the long-term impact.
Option D: Intermediate is not a standard, recognized category in the three-level model of prevention (Primary, Secondary, Tertiary) established by Leavell and Clark.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Levels of Prevention in Community Health Nursing as background academic context rather than a clinical decision trigger.
Nurses are responsible for implementing and enforcing isolation precautions (e.g., airborne precautions for measles) to prevent nosocomial (hospital-acquired) infections.
Patient and family education is a key nursing role. The nurse must explain the reason for isolation, how it works, and its duration to ensure compliance and reduce anxiety.
What if? If a susceptible, unimmunized person is exposed to measles before the patient is isolated, the correct action shifts to post-exposure prophylaxis (a secondary prevention strategy for that individual), which includes giving the MMR vaccine within 72 hours or Immunoglobulin (IG) within 6 days of exposure.

How to Approach the Question

First, identify the key action in the question: 'Isolation of a child with measles'.
Next, define the purpose of this action in a public health context. The goal of isolating a sick person is to prevent them from spreading the disease to healthy people.
Recall the definitions of the three levels of prevention: Primary (preventing disease before it starts), Secondary (early detection/treatment), and Tertiary (reducing disability/rehabilitation).
Match the purpose of 'isolation' to the correct level. Since it prevents new cases in the community, it aligns with the definition of Primary Prevention.
Eliminate the other options. Secondary prevention would be about treating the sick child, not isolating them to protect others. Tertiary would be about managing long-term complications. 'Intermediate' is not a standard term.

Concept Tested & Keywords

Concept Tested: Levels of Prevention in Community Health Nursing
Stem keywords: Isolation, measles, level of prevention
Lead-in keywords: belongs to which
Clinical cues: Age/sex group narrows the expected diagnosis, intervention, or normal reference range.
Negative lead-in flag: false

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E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart A (pp 26-201 of 604) pp. 34-36, 151-153

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 1968-1970