Which scenario describes a chronically infected hepatitis B patient?

Which scenario describes a chronically infected hepatitis B patient?

• A. HBsAg: neg, Anti-HBc: pos, Anti-HBs: neg
• B. HBsAg: pos, Anti-HBc: pos, IgM anti-HBc: neg, Anti-HBs: neg
• C. HBsAg: pos, Anti-HBc: neg, Anti-HBs: pos
• D. HBsAg: neg, Anti-HBc: neg, Anti-HBs: pos

Answer: (B)

The scenario that describes a chronically infected hepatitis B patient is characterized by the presence of Hepatitis B surface antigen (HBsAg) alongside certain antibody markers. In this case, HBsAg being positive indicates an active infection of the hepatitis B virus. The presence of Anti-HBc (antibody to hepatitis B core antigen) being positive suggests prior or ongoing infection, as this antibody typically appears early in the course of infection and remains positive for a long time. The absence of IgM anti-HBc indicates that the infection is not acute but rather in a chronic phase, because IgM anti-HBc usually signifies an acute or recent infection. Additionally, the lack of Anti-HBs means that the patient has not cleared the virus and is not vaccinated, as this antibody is developed following recovery or vaccination against hepatitis B. Therefore, the combination of HBsAg positive, Anti-HBc positive, IgM anti-HBc negative, and Anti-HBs negative illustrates a classic profile for someone with a chronic hepatitis B infection, reflecting an ongoing viral replication and the patient’s inability to clear the virus.

The scenario that describes a chronically infected hepatitis B patient is characterized by the presence of Hepatitis B surface antigen (HBsAg) alongside certain antibody markers. In this case, HBsAg being positive indicates an active infection of the hepatitis B virus.

The presence of Anti-HBc (antibody to hepatitis B core antigen) being positive suggests prior or ongoing infection, as this antibody typically appears early in the course of infection and remains positive for a long time. The absence of IgM anti-HBc indicates that the infection is not acute but rather in a chronic phase, because IgM anti-HBc usually signifies an acute or recent infection. Additionally, the lack of Anti-HBs means that the patient has not cleared the virus and is not vaccinated, as this antibody is developed following recovery or vaccination against hepatitis B.

Therefore, the combination of HBsAg positive, Anti-HBc positive, IgM anti-HBc negative, and Anti-HBs negative illustrates a classic profile for someone with a chronic hepatitis B infection, reflecting an ongoing viral replication and the patient’s inability to clear the virus.