| prevalence of hbv and hcv among outpatients in the plovdiv region of bulgaria, 2010-2011. | viral hepatitis, particularly hepatitis b and c, are diseases with worldwide distribution that present a significant public health problem. seroprevalence studies allow assessment of the extent of the disease burden, the identification of populations at risk and the monitoring trends over time. a multi-center seroprevalence study, carried out in bulgaria (covering the five largest cities - sofia, plovdiv, varna, pleven, and stara zagora) in 1999-2000 estimated a crude seroprevalence rate of 3.9% ... | 2015 | 25163778 |