“…Among inactive HBV carriers, 34 studies reported HDV prevalence and it did not change significantly over three decades 6,13–45 (Table 1). Among patients with chronic hepatitis, 50 studies reported decreasing (from Period 1 to Period 2) and then increasing (from Period 2 to period 3) HDV prevalence 9,13–18,20,22–27,29–33,35–65 . (Table 2).…”