In recent surveillance reports cases of diphtheria are reducing. This is due to -: (A) Chemoprophylaxis, (B) Improved standard of living, (C) Vaccination, (D) Health education
Answer is C. 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.