2012 · Paper V · 10 marksFrequently asked

Write a short note on the adverse consequences of vaccination.

In short

Vaccination's adverse consequences include side effects from fever to rare allergic or neurological events, vaccine hesitancy, coercion-related ethical concerns and weak adverse-event surveillance. Such problems erode trust and coverage, as seen in OPV-linked paralytic polio cases in Delhi (1989-94) and the 2022 Maharashtra measles outbreak.

Model answer

Ghissu Editorial · Verified 4 Oct 2026

Introduction
Vaccination is a key public health tool, exemplified by the Universal Immunisation Programme and Pulse Polio Programme1, but adverse consequences challenge its effectiveness, especially in Andhra Pradesh. These challenges affect programme reach and acceptance in diverse socio-economic settings.
Adverse Consequences of Vaccination
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Vaccine-Associated Adverse Events

Vaccines cause mild to serious side effects; paralytic poliomyelitis cases after Oral Polio Vaccine doses were documented in Delhi (1989-94). Such rare neurological complications highlight the need for vigilant safety monitoring.

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Vaccine Hesitancy2 and Social Resistance

The HPV Vaccination Drive encounters gendered mistrust and social resistance in rural India, hindering cervical cancer prevention3 despite government efforts. Misinformation and cultural beliefs deepen hesitancy, especially among marginalized communities.

Implications of These Adverse Consequences
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Erosion of Public Trust

Adverse events and coercion reduce immunisation coverage, risking outbreaks like the 2022 measles surge in Maharashtra. This erosion threatens herd immunity and public health gains.

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Social Inequities

Hesitancy clusters in vulnerable groups; gendered mistrust in HPV vaccination highlights social barriers. These disparities exacerbate health inequities and limit access to life-saving vaccines.

Way Forward
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Strengthen Surveillance Systems

Enhance adverse event monitoring with adequate resources, focusing on Andhra Pradesh’s rural districts. Integrating data systems can improve timely detection and response to vaccine safety concerns.

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Ethical Vaccination Policies

Promote informed consent and transparency, supported by the RTI Act 2005 for proactive disclosure. Avoiding coercion fosters voluntary participation and community trust.

Conclusion
Mitigating adverse consequences through surveillance, ethics, and community engagement is vital to maintain trust and achieve Sustainable Development Goal 3 for health and well-being. This ensures vaccination remains a cornerstone of public health progress.

This model answer is indicative and the model can make mistakes; please verify key facts independently.

Hand-drawn diagram: How adverse consequences hurt coverage. How adverse consequences hurt coverage. Flow: Adverse events and coercion → Hesitancy and mistrust grow → Vaccination coverage falls → Herd immunity weakens → Outbreaks, as measles in 2022
Diagram: How adverse consequences hurt coverage

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This chapter in the exam

Human diseases; genetic engineering basics; biotechnology in agriculture; vaccines54 questions

Asked in 8 of 8 sittings since 2008

2008
5
2011
6
2012
15
2016
11
2017
4
2020
5
2023
3
2025
5

Most tested: Vaccines and immunisation, alongside GM crops/biotech agriculture.

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