Journal of

Background and Aim: Vaccination is one of the most important primary prevention and preventing the spread of infectious diseases. DTP3 is commonly used as a criteria for the availability of health services. The purpose of this study was determining vaccination coverage of DTP3 and factors influencing it.

Materials and Methods: One thounsed and four hundred fiftey eight children (12-24 month old) from 17th district of Tehran were enrolled in this cross sectional study. In this study, vaccination status of the DTP3 vaccination schedule according to the demographic variables was determined. Information was collected by a questionnaire referring to children's vaccination card. Sampling method was cluster sampling and included 146 clusters with 10 children in every cluster. Data collected were analyzed using spssv13 software and chi-square and t tests.

Results: In this study, 744 girls and 714 boys participated. 1241 patients, (85.1%) cases received their vaccines at the right time. 190 patients (13%) cases had not received the vaccine at the proper time, and 27 patients (1.9 %) were not vaccinated. Between vaccine status and mother's education (p=0.003), father's education (p=0.012), family income (p=0.003), number of children in the family (p=0.006), birth order (p=0.007), and status of family's medical record in the health center (active - inactive)(p=0.002), significant difference was observed.

Conclusion: Although vaccination coverage rate of DTP3 was 98%, more than 13% of cases, did not receive the vaccine at the right time and this constitutes to childhood illness. More research is needed to identify factors influencing no vaccination at the right time.

Background and Aim: The present study aimed to assess the impact of trade openness and vaccination on child mortality under five because the mortality of under-five-year-old children is one of the most important indexes of health and development. 
Materials and Methods: Using an Eviews6 software, this study is doing a causal-analytic approach by exhausting a Johansen-Juselius method over the period of first quarter of 1984 to forth quarter of 2013, in Iran.
Results: Coefficients for each of the variables in the model were consistent with the theoretical bases. Based on the findings of the study, the increase of one unit in each of the variables of DTP vaccine and trade openness leads to the decrease of child mortality as much as 0.23 and 4.36 units, respectively. Also, the results based on error correction model indicate that in each period, about 0.04 of short-run imbalances is adjusted to achieve a long-term balance.
Conclusion: Since the increase of vaccination and trade openness reduce the mortality of under-five-year-old children, it is suggested that the immunization of children be trained in all parts of the country so that we can achieve high rates of growth and development by the delivery of healthy factors of production to the society. Moreover, by increasing trade relations and dealings with other countries, we can prepare the grounds for the entry of new knowledge and medical equipment as well as health promotion and human development.