Dose of BCG vaccine is?

Appeared in: JIPMER Pondicherry NO - 2022

Explanation

The standard dose of BCG vaccine is 0.1 ml for all children aged 1 month and older.
For neonates (infants under 1 month), a reduced dose of 0.05 ml is given to minimize the risk of local reactions like lymphadenitis, as their skin is thinner.
Since 0.05 ml is not provided as an option, 0.1 ml is the most appropriate answer, representing the standard dose for most infants and children.

Option A: This volume (0.5 ml) is typical for intramuscular (IM) vaccines, not the intradermal (ID) BCG vaccine.
Option B: This is not a standard recommended dose for any vaccine in the routine immunization schedule.
Option D: This is a large volume for a vaccine and is never used for BCG.

Clinical Relevance

Nursing practice connection: Knowing BCG Vaccine Administration Dose helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Administering the correct dose and using the proper intradermal technique is crucial for BCG vaccination to ensure efficacy and prevent adverse effects like deep abscesses or severe lymphadenitis.
A key nursing responsibility is to use a tuberculin syringe for accuracy and to educate parents about the expected local reaction (papule -> pustule -> scar) to prevent anxiety and ensure they don't misinterpret it as an infection.
What if? If a nurse accidentally administers the BCG vaccine subcutaneously instead of intradermally, the vaccine's effectiveness is reduced, and there is a higher risk of forming a cold abscess. The incident must be documented, and the child's physician notified for further guidance.

How to Approach the Question

Identify the core question: The question asks for the dose of the BCG vaccine.
Recall knowledge about the National Immunization Schedule, specifically for BCG.
Remember that BCG has two different doses based on the infant's age: one for neonates (less than 1 month) and one for older infants/children.
The dose for neonates is 0.05 ml, and the dose for infants 1 month and older is 0.1 ml.
Scan the options: 0.5 ml, 0.2 ml, 0.1 ml, 1.0 ml.
Note that 0.1 ml is present, but 0.05 ml is not. Since 0.1 ml is a standard dose, it is the correct choice among the given options.

Concept Tested & Keywords

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E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart B (pp 202-403 of 604) p. 42-44

E6 Ghai Essential Pediatrics(pp 26-904 of 913) p. 192-194

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