en General پژوهشي Research Article Background: Hepatitis B is a risk factor for cirrhosis and hepatocellular carcinoma. Epidemiological study of patients with hepatitis B can provide valuable information for thoughtful healthcare planning. This study was made to evaluate the epidemiology of the hepatitis B virus infection in Babol Iran. Methods: This was a cross-sectional descriptive study. The study sample consisted of all individuals who had been diagnosed with hepatitis B in 2010 - 2016 and their hepatitis-related information were available from the hepatitis B assessment forms in the Health Administration of Babol University of Medical Sciences, Babol, Iran. Study data were retrieved from the already completed forms. Results: A total of 567 hepatitis B forms had been completed in 2010 - 2016. Among 567 individuals, 373 cases (65.8%) were male and 194 (34.2%) were female. Individuals were mostly married and rural dwellers. The age group with the highest frequency was 25 - 35. Most men were self-employed, while most women were housewives. The most important reasons behind the hepatitis B surface antigen testing among women and men were pregnancy and the availability of hepatitis B risk factors, respectively. Around 91.5% of participants had not received a hepatitis B vaccine at all, 3.2% had received it incompletely, and 5.3% completely. Conclusion: Hepatitis B is more common among married, middle-aged, males, as well as rural dwellers. Continuous follow-up assessment, lifestyle education, and complete hepatitis B vaccination are essential for effective hepatitis B prevention. Hepatitis B,Epidemiology,Babol 0 0 http://mcj.bums.ac.ir/browse.php?a_code=A-10-1-61&slc_lang=en&sid=1 Mehdi Safarpour 10031947532846003553 10031947532846003553 No MSc of Epidemiology, Health Deputy, Babol University of Medical Sciences, Babol, IR Iran Seyed Reza Hosseini 10031947532846003554 10031947532846003554 No Professor of Community Medicine, Department of Community Medicine, School of Medicine, Babol University of Medical Sciences, Babol, IR Iran Amir Tiyuri 10031947532846003555 10031947532846003555 No PHD Student of Epidemiology, Department of Epidemiology, School of Health, Iran University of Medical Sciences, Tehran, IR Iran Seyed Mostafa Mirzad 10031947532846003556 10031947532846003556 No MSc Student of Epidemiology training. Health Deputy, Babol University of Medical Sciences, Babol, IR Iran Masume Mohamadzade 10031947532846003557 10031947532846003557 Yes Masume Mohamadzade, MSc of Health Services Management, Health Deputy, Babol University of Medical Sciences, Babol, Iran. E-mail: safarpour1388@gmail.com