An observational, health service based survey for missed opportunities for immunization.

Studies cite missed opportunities for immunization (MOI) as a contributor to under-vaccination. The present prospective survey aimed at determining the magnitude of MOI, its contribution to under-vaccination, and identifying risk factors for MOI. Mothers of 1384 indoor patients £6 years were interviewed. There were 266 (19.2%) children with MOI, accounting for 79.6% of under-vaccination and 93% of under-vaccination time. MOI occurred significantly more often with home delivery (P <0.001, Odds ratio 5.1), incomplete or incorrect maternal knowledge of immunization (P=0.001, Odds ratio 4.8) and, general practice and non-Pediatric/non-Medical college based practice (P=0.001, Odds ratio 4.0). The impact of sociodemographic factors on likelihood of MOI was not significant.