Background and Objectives: This study aimed to analyze existing data to achieve a comprehensive understanding of human brucellosis trend and its current situation in Jolfa city for implementing appropriate prevention and controlling program.

Material and Methods: This cross-sectional study was conducted on 91 patients with brucellosis who referred to Jolfa city health centers and private clinics from 2010 to 2014 and standard form of the brucellosis disease was completed for them. The collected data were analyzed using SPSS statistical software version 16 and descriptive statistics and chi-square test.

Results: The mean incidence of brucellosis was 34.6 per 100,000. About 60.4% of the patients were male and 86.6% were living in rural. Disease was more common in men but there was no significant difference between the genders (x2 =2.72, p-value=0.85). The mean age was 36.7 years old (SD=1.78) with a range from 4 to 87 years old. The most cases of diseases were aged 40-50 years old. The most contagious seasons were spring (40.65%) and summer (26.37%). About 85.7% of the patients had a history of animal contact and 78 % of the patients had a background of consuming unpasteurized dairy products. According to the findings, 94.55% of the patients were new cases and 38.5% had a history of disease in the family. The most cases (34.1%) were in Komar-Sofla village.

Conclusion: Despite the decrease of brucellosis disease in the East Azerbaijan province, trend of disease is increasing in Jolfa and brucellosis is still one of the common diseases. According to the results and considering the nature of the disease, applying ecological theories based on the multi-sectoral collaboration of the society can be effective in preventing the disease.
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