The Indonesian Demographic and Health Survey (SDKI) was carried out in 1994. To maximize the usefulness and evaluate the relevance of the data that had been collected, extended analysis of immunizational status and morbidity of children underthree was performed. The purpose of this analysis was to assess the cases and proportion of the diseases or symptoms of children underthree who could show the KMS or Immunization card based on the status of immunization, to compare the proportion of the diseases or symptoms between the immunizational status groups, and to assess the Odds Ratio (OR) of disease in the uncompleted and non-immunized groups compared to the completed immunized group. A bivariate analysis in SPSS programme using x2 and OR tests was used.The overall diseases proportion of the 1959 children underthree who could show KMS or Immunization card was 51.3 %. The highest percentage of cases (47.7%) was cough with fast breathing (pneumonia) in the uncompleted immunization group (missed one or more of these immunization: BCG, DPT, Polio and Measle), and the highest disease proportion (26.3%) was fever with cough (non pneumonia ARI) in non-immunized group. The highest disease proportion in completed immunized children underthree was fever with cough (non pneumonia ARI); while in the uncompleted immunized group it was fever with cough with or without fast breathing (non pneumonia ARI or pneumonia); and in non-immunized group were fever with cough with or without fast breathing or with diarrhoea (non pneumonia ARI or pneumonia or with diarrhoea). The uncompleted immunized DPT group had 1.57 - 4.25 higher risk of non pneumonia ARI or pneumonia with or without diarrhoea than the completed immunized DPT group. Either in the non-immunized Measles group had 1.44 - 5.88 higher risk of non pneumonia ARI or pneumonia with or without diarrhoea than the immunized Measle group. If the immunization was not completed, they had 1.64 - 44.93 higher risk of non pneumonia AR1 or pneumonia with or without diarrhoea than the completed immunized group; and the non-immunized group had 2.24 - 3.96 higher risk of diarrhoea with or without fever compared to the completed immunized group.The most common disease of the 51.3 % sick children underthree was ARI. The status and type of immunization play a role in reducing the risk and severity of ARI and diarrhoea.