What is the usual route of administration of the measles vaccine as per the National

Immunization Schedule?

Appeared in: BTSC 3 August 2025

Explanation

The National Immunization Schedule of India mandates that the measles-containing vaccine (Measles, MR, or MMR) be administered via the subcutaneous route.
This method involves injecting the vaccine into the fatty tissue layer just beneath the skin, typically at a 45-degree angle.
The standard dose is 0.5 mL, and the designated site is the right upper arm.
Subcutaneous administration allows for slow absorption of the live attenuated virus, which effectively stimulates a durable immune response.

Option A: The intravenous route is not used for routine vaccinations as it introduces the antigen directly into the bloodstream, risking a rapid and potentially severe systemic reaction.
Option B: The intradermal route is reserved for specific vaccines where a localized immune response in the skin is desired.
Option C: The intramuscular route is used for vaccines that are absorbed well by muscle tissue or contain adjuvants that can cause irritation if given subcutaneously.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Route of administration for measles vaccine under the National Immunization Schedule as background academic context rather than a clinical decision trigger.
Using the correct administration route is critical for vaccine efficacy and safety. An incorrect route can lead to reduced immunogenicity (vaccine failure) or increased local adverse reactions.
For example, administering the measles vaccine intramuscularly instead of subcutaneously could lead to a less effective immune response.
Nurses must be proficient in all vaccination techniques and knowledgeable about the specific requirements for each vaccine in the National Immunization Schedule.

How to Approach the Question

First, identify the key components of the question: 'measles vaccine' and 'route of administration' according to the 'National Immunization Schedule'.
This is a direct factual recall question from Community Health Nursing.
Systematically recall the administration routes for the primary vaccines in the schedule.
Recall that live attenuated vaccines like measles are often given subcutaneously.
Eliminate the other options by associating them with the correct vaccines: Intradermal is for BCG, and Intramuscular is for DPT/Pentavalent.
Select 'Subcutaneous' as the correct route for the measles vaccine.

Concept Tested & Keywords

Concept Tested: Route of administration for measles vaccine under the National Immunization Schedule.
Stem keywords: measles vaccine, route of administration, National Immunization Schedule
Lead-in keywords: What is
Negative lead-in flag: false

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E6 Ghai Essential Pediatrics(pp 26-904 of 913) pp. 198-200, 187-189

Practise the full BTSC 3 August 2025

Attempt every question from this paper in a timed mock, then review the full solution for each one.