Immunization coverage and immunity to diphtheria and tetanus among children in Hyderabad, India.

BACKGROUND: The Indian state of Andhra Pradesh accounted for 50% diphtheria and 3% tetanus cases reported globally during 2005. During 2003-2006, there was a rising trend of diphtheria in Hyderabad, the state capital, whereas there was no major change in trend of tetanus cases. We estimated coverage of diphtheria and tetanus vaccine among children aged or=0.1IU/ml). Booster coverage and immunity against these diseases was lower among Muslims. CONCLUSIONS: It is necessary to improve booster coverage especially among Muslims. Vaccinating school children at school entry and periodic boosters thereafter will increase immunity among children.