TY - GEN T1 - Prevalence and genotype distribution of hepatitis delta virus among chronic hepatitis B carriers in Central Vietnam AU - Nguyen, Hung Minh AU - Sy, Bui Tien AU - Trung, Nguyen Thanh AU - Hoan, Nghiem Xuan AU - Wedemeyer, Heiner AU - Velavan, Thirumalaisamy P. AU - Bock, Thomas AB - Hepatitis D virus (HDV) infection plays an important role in liver diseases. However, the molecular epidemiology and impact of HDV infection in chronic hepatitis B (CHB) remain uncertain in Vietnam. This cross-sectional study aimed to investigate the prevalence and genotype distribution of HDV among HBsAg-positive patients in Central Vietnam. 250 CHB patients were tested for HDV using newly established HDV-specific RT-PCR techniques. HDV genotypes were determined by direct sequencing. Of the 250 patients 25 (10%) had detectable copies of HDV viral RNA. HDV-2 was predominant (20/25; 80%) followed by HDV-1 (5/25; 20%). Proven HDV genotypes share the Asian nomenclature. Chronic hepatitis B patients with concomitant HDV-1 showed higher HBV loads as compared to HDV-2 infected patients [median log10 (HBV-DNA copies/ml): 8.5 vs. 4.4, P = 0.036]. Our findings indicate that HDV infection is highly prevalent and HDV-2 is predominant in Central Vietnam. The data will add new information to the management of HBsAg-positive patients in a highly HBV endemic region to in- or exclude HDV infection in terms of diagnostic and treatment options. KW - 610 Medizin PY - 2017 LA - eng PB - Robert Koch-Institut, Infektionskrankheiten / Erreger VL - 12 IS - 4 DO - 10.1371/journal.pone.0175304 ER -