... serop-ositivity of < /b> dual infection of < /b> HBV and HCV among blood donors in Nyala Teaching Hospital was (0.25%), this per-cent is in accordance with the endemic level of < /b> bothviruses in South Dar ... on the combined effect of < /b> hepatitis < /b> B and C virus infec-tions in causing hepatocellular carcinoma in China. BritishJournal of < /b> Cancer 2005, 92:607-612.12. Crespo J, Lozano JL, de la Cruz F, ... is uncommon in Nyala and may be in the large Sudan due to the endemic level of< /b> both viruses.ConclusionThe study concluded that the seropositivity < /b> of < /b> HBV and HCV dual infection among population...