Seroepidemiology and Risk Factors of Hepatitis B Virus Infection: A Population-Based Azar Cohort Study
Background: Hepatitis B is a major global health problem. It can cause chronic infections and put people at high risk of death from cirrhosis and hepatocellular carcinoma. The aim of this study was to report the epidemiological features of hepatitis B virus (HBV) infection and risk factors based on the data from Azar Cohort.
Methods: The population of this study comprised the people in the age range of 35-70 yr from Azar cohort, East Azerbaijan Province, Iran between 2015 and 2016. Based on cluster sampling, 4,949 people were selected and invited to complete the questionnaire and perform the tests. Blood samples were analyzed for serum HBV markers (HBsAg, HBsAb and HBcAb) by ELFA method. The data were analyzed using SPSS statistical software.
Results: The mean (SD) age of the participants was 49.15 ± 9.02 years. The frequency rates of HBsAg, HBsAb and HBcAb were estimated as 1.03%, 16.9% and 24.95%, respectively. There was statistically significant association between family history of hepatitis (P<0.001) and jaundice history (P<0.001) with the presence of HBsAg. There was also a positive correlation between marital status (P=0.002), history of hospitalization (P<0.001), smoking (P=0.001), dental procedures (P<0.001), foreign travels (P=0.005), occupation status (P=0.002) and the presence of HBcAb.
Conclusion: The frequency of hepatitis B in Azar Cohort was 1.03% which is a lower rate compared with other reports from Iran. The association of the population studied and the increase of public awareness in this area can probably prevent this disease.
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