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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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In recent surveillance reports cases of diphtheria are reducing. This is due to -
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The correct answer is  Ans. is 'c' i.e., Vaccination o The reduced incidence of diphtheria in India is primarily due to the high coverage of appropriate immunization in children and to an apparent reduction in toxin-producing strains of the bacterium.