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Background: Brucellosis is one of the major health problems in many areas of the world, especially in the Mediterranean and the Middle East regions.Objective: To determine the epidemiological characteristics, clinical signs, and risk factors of relapse rate in patients with brucellosis, Qom Province, Iran.Methods: A descriptive-analytic study was conducted on 410 confirmed brucellosis cases in Qom Province, central Iran, from 2015 to 2019, based on epidemiological checklists and according to the Iran Ministry of Health and Medical Education (MOHME). Univariate and multiple logistic regression analyses were conducted using Stata software version 14.Results: The relapse rate of brucellosis was 6.6% until nine months after s arting the treatment, and all recurrent cases were infected by Brucella melitensis. Based on univariate logistic regression analysis, the delayed treatment and type species of Brucella were significant factors affecting the relapse of brucellosis. The relapse rates were 5.4%, 6.2%, and 20.0% in patients whose delayed treatments were <50, 51-150, and >151days, respectively. Based on the multiple logistic regression, it was observed that delayed treatment >50 days increased the rate of relapse more than four times.Conclusion: The delayed initiation of treatment was a significant factor influencing the relapse of brucellosis; therefore, it is necessary to provide enough diagnostic and laboratory facilities, and people need to be educated about the signs and symptoms of the disease.

Background: It seems that in vaginal delivery, serum leptin level increases as a cortisol-dependent factor due to the stress of the embryo. Studies have shown that if the level of serum leptin is low, the risk of chronic metabolic diseases, cardiovascular diseases, hypertension, and obesity in the mother and the baby will increase. Objectives: The aim of this study was to determine the relationship between serum leptin levels in pregnancy and the type of delivery. Methods: This study was a descriptive-analytic study which adopted a longitudinal approach to examine mothers in the first and second trimester of pregnancy in Tehran in. The participants were selected by means of cluster random sampling. After obtaining consent from the mothers, their blood samples were collected at-and-weeks of pregnancy and their serum leptin levels were determined. The mothers' examination continued after their delivery. Finally, the mothers were divided into two groups including the vaginal delivery group (participants) and the cesarean group (participants). Independent-Samples ttest, Pearson test, regression test, and Lambda test were used to analyze the data. SPSS was employed to carry out analyses at P value< level. Results: The mean values of the serum leptin level in the first trimester and second trimester were higher in the normal delivery group in comparison with the cesarean group. Nonetheless, there was not a significant relationship between the serum leptin level and the type of delivery despite the fact that there was a statistically significant relationship between the type of delivery and the changes in leptin levels during pregnancy and these changes were reported more frequently in the normal delivery group in comparison with in the cesarean group (P value= .). Conclusion: Based on the results of this study, leptin level changes during pregnancy can have a predictive role in the mothers' type of delivery. However, further studies with larger samples are required to confirm the extent and type of this role.