A patient is diagnosed with a serum-borne viral infection of the liver. Laboratory tests confirm the virus has a DNA genome. Which virus is it?
Q1. A patient is diagnosed with a serum-borne viral infection of the liver. Laboratory tests confirm the virus has a DNA genome. Which virus is it?
Answer: Hepatitis B
Explanation: Hepatitis B is the only DNA virus among common hepatitis types. Hepatitis C is a tempting choice but it contains an RNA genome.