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Since the cultural diversity in Western Europe is growing, this study assessed whether foreign-born chronic hepatitis B (CHB) patients have more cirrhosis than Dutch- or Belgian-born patients, with a main focus on the Turkish population. Baseline characteristics (eg, socioeconomic status [SES]), biological characteristics, and disease outcome (eg, cirrhosis) were collected for all patients. Between December 2009 and January 2015, 269 CHB patients participated from the outpatient departments of three hospitals in the Netherlands, Belgium, and Turkey. Out of the 269 CHB patients, 210 were foreign-born and 59 were Dutch- or Belgian-born. Compared with Dutch- or Belgian-born patients, foreign-born patients had a higher prevalence of low SES (58% vs 31%; P = 0.001) and cirrhosis (27% vs 10%; P = 0.007). Among the Turkish population, there were no significant differences regarding the prevalence of low SES (73% vs 61%; P = 0.170), alcohol abuse (1% vs 5%; P = 0.120), anti-hepatitis C virus positivity (4% vs 0%; P = 0.344), anti-hepatitis D virus positivity (1% vs 6%; P = 0.297), and cirrhosis (37% vs 27%; P = 0.262) between patients (n = 102) living in Turkey (local) and Turkish CHB (n = 38) patients living in the Netherlands or Belgium (immigrant). In multivariate analysis, low SES (odds ratio, 5.7; 95% confidence interval, 2.3-14.5; P < 0.001) was associated with cirrhosis. In this study, foreign-born CHB patients were associated with more advanced HBV-related liver disease with 27% having cirrhosis. However, ethnicity was not associated with cirrhosis when SES was included in the multivariate analysis. The similar prevalence of cirrhosis in local Turkish compared to immigrant Turkish CHB patients is novel and warrants further investigation., (© 2018 The Authors. Journal of Medical Virology Published by Wiley Periodicals, Inc.)

Background and Aims: Hepatitis B virus (HBV) infection is a global threat and with the growing cultural diversity in Western Europe, knowledge on routes of infection in order to decrease HBV spreading is essential. This study assessed the risk of horizontal transmission through non-sexual close contact in the chronic hepatitis B (CHB) population in Maastricht (the Netherlands) and Genk (Belgium), with a main focus on the differences between ethnic groups., Methods: In this multicenter retrospective study, 166 CHB patients, who were still under follow-up between December 2009 to December 2014, were recruited from the Hepatology Outpatient Departments of two hospitals, one in Maastricht and one in Genk. Ethnicity (defined as country of origin (COO)) and routes of transmission were collected from all patients., Results: The CHB population in Maastricht and Genk consisted of 98 and 68 patients, respectively. In Maastricht, 31% were of Dutch and 16% of Chinese origin. In Genk, mainly Belgian (15%) and Turkish (50%) patients were included. The percentage of horizontal transmission in the total study cohort was 9%. Moreover, the COO groups Dutch/Belgian (n=40), Turkish (n=38) and Chinese (n=18) differed in the number of cases infected by horizontal transmission (4%, 30% and 6%, p=0.030)., Conclusion: Although the prevalence of horizontal transmission in the total study cohort is low, non-sexual close contact may play a role in the migrant population, particularly the Turkish. This should be an important public health target with respect to the prevention of HBV spreading., (© Acta Gastro-Enterologica Belgica.)