B- what disease does duyen have? assume that the desease is caused by dna virus? hepatitis b

Duyen has Hepatitis B. Hepatitis B contaminates in excess of 300 million individuals worldwide and is a typical reason for a liver ailment and liver tumor. HBV, an individual from the Hepadnaviridae family, is a little DNA infection with uncommon highlights like retroviruses. 
At the point when the viral DNA polymerase is utilized to interpret RNA to DNA, it is going about as a switch transcriptase like that found in retroviruses. Actually, Hepatitis B infection's DNA polymerase and retroviral turn around transcriptase are fundamentally the same as and may have developed from a typical progenitor.