NORCET 5 Prelims - Se…: Which vaccine should not be given to an HIV positive newborn?

NORCET 5 Prelims - Sept 2023 (Shift-1)

Child Health Nursing (Pediatrics)

Hard

Appeared in: NORCET 5 Prelims - Sept 2023 (Shift-1)

Explanation

BCG is a live attenuated bacterial vaccine.
In individuals with compromised cellular immunity, such as HIV-positive newborns, the live bacteria in the BCG vaccine can cause a severe and often fatal disseminated infection (BCG-osis).
The World Health Organization (WHO) specifically recommends against giving BCG vaccine to children who are known to be HIV-infected.
This contraindication is absolute for newborns at birth, as their HIV status may be confirmed or suspected, and their immune system is immature.

Option B: Measles vaccine (as part of MMR) is a live vaccine, but it is not given at birth. It is typically administered at 9-12 months. It is recommended for HIV-positive children who are not severely immunosuppressed because the risk from natural measles is very high.
Option C: Rubella vaccine (as part of MMR) is a live vaccine, but it is not administered at birth. It is given at 9-12 months and is generally considered safe for HIV-positive children who are not severely immunocompromised.
Option D: Mumps vaccine (as part of MMR) is a live vaccine not given at birth. Its administration follows the same guidelines as measles and rubella for HIV-positive children—given at 9-12 months and contraindicated only in severe immunosuppression.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Vaccine contraindications in immunocompromised infants as background academic context rather than a clinical decision trigger.
A nurse's primary responsibility before administering any vaccine, especially at birth, is to review the maternal and infant history for any contraindications, including maternal HIV status.
For infants born to HIV-positive mothers, BCG vaccination should be deferred until the infant's HIV status is confirmed to be negative. This is a critical patient safety measure.
Nurses play a key role in educating parents about the modified vaccination schedule for HIV-exposed infants and the reasons for these precautions.

How to Approach the Question

First, identify the key clinical information in the question: the patient is an 'HIV positive newborn'. This points to an immunocompromised state from birth.
Next, understand the question's core task, which is to identify a vaccine that should 'not be given' (a contraindication).
Recall the general principle of vaccination: live attenuated vaccines are generally contraindicated in severely immunocompromised individuals.
Evaluate all the options provided (BCG, Measles, Mumps, Rubella). Recognize that all are live vaccines.
Differentiate between the options based on the specific context of a 'newborn'. BCG is unique as it is typically administered at birth. The others (as MMR) are given later.
Synthesize the information: The risk of a live vaccine is highest when the immune system is weakest. For a newborn with HIV, the immediate risk comes from the vaccine given at birth. Therefore, BCG is the most definitive contraindication among the choices.

Concept Tested & Keywords

Concept Tested: Vaccine contraindications in immunocompromised infants.
Stem keywords: vaccine, HIV positive, newborn
Lead-in keywords: not be given
Clinical cues: Patient is a newborn, which is a critical factor for the timing of vaccinations.
Clinical cues: Patient is HIV positive, indicating an immunocompromised state.

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E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart B (pp 202-403 of 604) p. 43-45

E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 1613-1615