All of the following vaccines given via intramuscular route, except?

Appeared in: NORCET 3 - 2022 (Shift-1)

Explanation

The question asks to identify the vaccine that is NOT given via the intramuscular (IM) route.
The MMR (Measles, Mumps, Rubella) vaccine is a live attenuated vaccine that is administered subcutaneously (SC).
Administering the MMR vaccine via the SC route into the fatty tissue of the upper arm or thigh is the standard and recommended practice.
This makes MMR the correct exception in a list of vaccines that are typically administered via the IM route.

Option A: The Hepatitis B (Hep B) vaccine is a recombinant vaccine that is correctly administered via the intramuscular (IM) route. Therefore, it is not the exception.
Option B: The DPT (Diphtheria, Pertussis, Tetanus) vaccine is a combination vaccine containing toxoids and inactivated bacteria, which is correctly administered via the intramuscular (IM) route. It is not the exception.
Option C: The Hib (Haemophilus influenzae type b) vaccine is a conjugate vaccine that is correctly administered via the intramuscular (IM) route. It is not the exception.

Visual 1: Diagram - The provided image clearly illustrates the different angles of injection for Intramuscular (90°), Subcutaneous (45°), Intravenous (25°), and Intradermal (10-15°) routes, which is central to understanding the answer.
Visual 2: Chart - A chart of the National Immunization Schedule (India) showing vaccines, their recommended ages, routes of administration, and dosages would be a helpful learning aid.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Vaccine Administration Routes as background academic context rather than a clinical decision trigger.
Administering a vaccine by the correct route is critical for its efficacy and safety. An incorrect route can lead to a reduced immune response or increased local reactions.
For example, some vaccines contain adjuvants to enhance the immune response, which are formulated to be released from muscle tissue (IM). Giving them subcutaneously can cause severe local irritation and inflammation.
Nurses must double-check the recommended route for every vaccine before administration as part of the 'six rights' of medication administration.

How to Approach the Question

First, identify the core of the question: it asks for the 'exception' regarding the intramuscular route.
This means you need to find the one vaccine in the list that is NOT given intramuscularly.
Go through each option and recall or determine its standard route of administration.
Evaluate Option A (Hep B): This is given IM.
Evaluate Option B (DPT): This is given IM.
Evaluate Option C (Hib): This is given IM.

Concept Tested & Keywords

Concept Tested: Vaccine Administration Routes
Stem keywords: vaccines, intramuscular route
Lead-in keywords: except
Negative lead-in flag: The question asks for the exception among the given options.

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Practise the full NORCET 3 - 2022 (Shift-1)

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