Epidemiological Study of Brucellosis in Ilam Province from 2011 to 2018: A Cross-sectional Study

Background: The aim of this study is to investigate the epidemiological indicators of brucellosis in Ilam province, west of Iran, during the years 2011 to 2018. Methods: This descriptive cross-sectional analytical study was performed on 1,002 patients with brucellosis in Ilam province, west of Iran. People with a Wright test greater than 1.80 or a positive 2ME test who were diagnosed with brucellosis were followed up and treated. Data were analyzed using SPSS software version 21 and Excel 2007. Results: 1002 patients with brucellosis were diagnosed, 566 of whom were male (56.5%) and 436 were female (43.5%). The mean age at the onset of the disease was 38.11±19.61 in men, 41.73±15.67 in women, and39.94±17.81 in both sexes. The incidence of brucellosis in 2011 was 20.44 per 100,000 (22.30 per 100,000 in men and 18.53 per 100,000 in women), which dropped to 15.94 per 100,000 in 2018. Regarding the season, most cases of the disease were observed in summer (31%), spring (24.7%), winter (23.6%), and autumn (20.7%), respectively. Conclusion: The results showed that the age of the onset of the disease was middle age, when individuals are active labor and human capital working in a community. Therefore, improving cross-sectoral and intra-sectoral cooperation and promoting effective education for prevention seem necessary.