Which of the following is not the correct dosage age for the Oral Polio Vaccine (OPV), as per the National Immunization Schedule?

Appeared in: MP NHM CHO-2024 (Shift-2)

Explanation

The age of 36 weeks is not a designated time for the administration of any dose of the Oral Polio Vaccine (OPV) under India's National Immunization Schedule (NIS).
The NIS for OPV includes a birth dose, three primary doses at 6, 10, and 14 weeks, and a booster dose between 16-24 months.
Since the question asks for the incorrect dosage age, 36 weeks is the correct answer as it falls outside this established schedule.

Option A: This is an incorrect choice because 'At Birth' is the correct time for the OPV-0 (zero dose), which should be given as early as possible, preferably within the first 15 days of life.
Option B: This is an incorrect choice because 6 weeks is the correct and standard age for administering the first primary dose (OPV-1) along with other primary vaccines like Pentavalent and Rotavirus.
Option C: This is an incorrect choice because 14 weeks is the correct and standard age for administering the third primary dose (OPV-3), completing the primary series for infants.

Visual 1: Chart - A clear and updated chart of the National Immunization Schedule for infants and children in India. This visual aid helps in memorizing the specific timelines for all vaccines, including OPV.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain National Immunization Schedule for Oral Polio Vaccine (OPV) as background academic context rather than a clinical decision trigger.
Strict adherence to the National Immunization Schedule is crucial for preventing vaccine-preventable diseases like polio and ensuring community-wide (herd) immunity.
Nurses are at the forefront of immunization services. Their role includes accurately administering vaccines, maintaining the cold chain (especially for heat-sensitive vaccines like OPV), and educating parents on the importance of timely vaccination and potential side effects.
What if? If a child misses the 10-week dose of OPV, the schedule should not be restarted. The missed dose should be given as soon as possible, and the subsequent dose (14-week dose) should be given after a minimum interval of 4 weeks.

How to Approach the Question

First, carefully read the question and identify the negative keyword 'not'. This signals that you must find the option that is an exception or incorrect.
Next, identify the core subject of the question, which is the 'dosage age for the Oral Polio Vaccine (OPV)' under the 'National Immunization Schedule'.
Recall the standard immunization schedule for OPV in India: Birth, 6 weeks, 10 weeks, 14 weeks, and a booster at 16-24 months.
Systematically evaluate each option against the recalled schedule.
Option A ('At Birth'), B ('6 weeks'), and C ('14 weeks') are all part of the standard schedule.
Option D ('36 weeks') is not part of the schedule. Therefore, it is the correct answer to this negative question.

Concept Tested & Keywords

Concept Tested: National Immunization Schedule for Oral Polio Vaccine (OPV)
Stem keywords: Oral Polio Vaccine, OPV, National Immunization Schedule, dosage age
Lead-in keywords: not
Negative lead-in flag: Question asks for the incorrect option (NOT).

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Practise the full MP NHM CHO-2024 (Shift-2)

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