Diphtheria and Tetanus Antibody Persistence in Indian Pre-school Children and Response to a Booster Dose of DT Vaccine.

Ajit M. Satwekar, Shireen S. Telang, Nilesh A. Ghorpade, Prajakt J. Barde, Moreshwar R. Patwardhan, Prasad S. Kulkarni

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DOI: 10.4236/wjv.2011.11002                

Abstract

Despite effective vaccines, diphtheria (D) resurged recently in the former socialistic block, and tetanus (T) still occurs in less privileged countries. We studied the antibody persistence for D and T in Indian pre-school children who had received four doses of DTP vaccine and subsequently, the response to a booster dose. Anti-D and anti-T IgG antibodies prior to and one month after a DT vaccine were measured by ELISA in 223 healthy children of 4-6 years who had previously received four doses of the triple vaccine. Adverse reactions were monitored for one month. While 30% and 14% of subjects were susceptible to D and T, respectively, 98% and 100% of them attained seroprotection post-vaccination. Both responses were significant. Local, but not systemic reactions except fever were rather common. A high proportion of the Indian pre-school population is susceptible to D and T, despite of receiving four doses. The current policy of giving the fifth dose at this age is appropriate.

Keywords

Diphtheria, tetanus, antibodies, India, preschool children, DT vaccine

Conflicts of Interest

The authors declare no conflicts of interest.

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