2012 · Paper V · 10 marksFrequently asked

Give an account of the adverse effects of passive immunization.

In short

Passive immunization gives only short-lived protection and can cause hypersensitivity reactions up to anaphylaxis, serum sickness, rare blood-borne infection and blunted response to live vaccines like measles. In Andhra Pradesh, equine antivenoms used for snakebite in Visakhapatnam carry allergy risks, while cost and cold chain limits restrict access in Rayalaseema.

Model answer

Ghissu Editorial · Verified 4 Oct 2026

Introduction
Passive immunization transfers preformed antibodies for immediate protection but has adverse effects affecting safety, implementation, and social acceptance, especially in Andhra Pradesh. It is crucial in emergencies like snakebites and tetanus but poses challenges that limit its broader use.
Institutional and Safety Concerns
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Limited Duration

Protection lasts weeks, necessitating repeated doses or active immunization, burdening Andhra Pradesh’s public health system. This temporary immunity requires careful scheduling to maintain protection.

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Serum Sickness and Allergies

Equine antivenoms in Visakhapatnam cause hypersensitivity and serum sickness, complicating care. These immune reactions range from mild rashes to severe anaphylaxis, increasing clinical risks and resource needs.

Implementation Challenges
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Cold Chain Issues

Maintaining cold storage in remote Andhra Pradesh districts is difficult, risking antibody potency loss. Inadequate infrastructure leads to reduced efficacy and treatment failures.

Social and Ethical Dimensions
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Equity Concerns

Unequal distribution raises ethical issues, especially in drought-prone Rayalaseema. Vulnerable populations face barriers to lifesaving passive immunization, highlighting fairness challenges.

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Dependency Risks

Overreliance may reduce vaccination uptake, undermining the Universal Immunisation Programme in Andhra Pradesh. This complacency threatens herd immunity and long-term disease control.

Way Forward
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Regulatory Strengthening

Enhance quality control and pharmacovigilance in Andhra Pradesh to monitor adverse reactions and ensure safe antibody standards. Robust oversight can improve safety and public trust.

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Community Engagement

Promote awareness to counter myths and improve acceptance alongside active immunization. Culturally sensitive education can reduce hesitancy and improve timely treatment.

Conclusion
Passive immunization is vital but requires robust management of its adverse effects through regulation, infrastructure, and education to optimize health outcomes. Addressing these challenges is essential for effective and equitable use in Andhra Pradesh.

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Hand-drawn diagram: Adverse effects of passive immunisation. Adverse effects of passive immunisation. Diagram (tree): Adverse effects of passive immunisation; Adverse effects; Medical: hypersensitivity, serum sickness; Implementation: cost, cold chain; Social: inequity, complacency, misuse
Diagram: Adverse effects of passive immunisation

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Question from the official APPSC Group-I Mains 2012 paper. Answer written by Ghissu's engine and checked against our editorial standards. Found an error? Tell us and we correct it within 48 hours.

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