The immunization status of infants and pregnant mothers in the community development block of Sarojini Nagar, having a population 1.6 lacs, was assessed for the year 1985-86 (pre UIP year) and again in 1987-88(post UIP year) using 30 cluster random sampling technique as proposed by WHO to study the impact of U.I.P. A significant increase in vaccine and dose-wise coverage was observed, this being 35.7%, 25.2% and 15.5% for DPT I, II & III in pre U.I.P year as compared to 69.5%, 57.1% &44.8% respectively for the post U.I.P year. Similar differences have been observed for OPV, BCG &Measles. A significant decrease in drop out rates has been observed. The percentage of fully vaccinated children although much higher (17.2% as against 1.9% in pre U.I.P. year) was still quite low in relation to the envisaged target. However, only 26.6% infants were un-immunized in 1987-88 as compared to 57.6% in 1985-86. T etvac coverage of pregnant mothers has shown a modest increase from 44.3% to 54.8%. Not many changes were observed in main reasons for non-immunization.

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Health care in a system which is influenced by other interacting subsystems. In order to maximize the output in the delivery of health care it is essential to understand these interrelations. Systems analysis is a tool in this direction being used in health care management recently. Some of the concepts and recent applications of the methodology in health care management are reviewed in the article to help administrators for wider use of the techniques so that health care management be better oriented for an optimum output.

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Measles immunization of 192 under 5 years of age children was undertaken and the overall seroconversion was 76.0%. Seroconversion rate in the age group of 9-12 months was 70.9% and it was 100% after one year. Immune response in malnourished children was more as compared to normal children. There were negligible side reactions after measles vaccination, and this vaccine passed normal potency tests under field conditions.

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Socio-demographic and drug related variables of 107 male tribal opium addicts of Himachal pradesh, who volunteered for treatment in rural de- addiction camps have been presented . Results of the study and reasons for the success of the de-addiction camps have been discussed.

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Medical technology should not be blindly borrowed. Before adoption, it should be scientifically assessed; not only medically, but also socially and economically. Proper medical technology assessment is the need of the hour, especially in the developing countries, where resources are limited and any mistakes committed would further hamper the socio-economic and health development.

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