Which disease state is most suggested by HBsAg positive, HBeAg positive, anti-HBc positive, anti-HBe negative, and anti-HBsAg negative?

Which disease state is most suggested by HBsAg positive, HBeAg positive, anti-HBc positive, anti-HBe negative, and anti-HBsAg negative?

• A. Highly infectious stage of hepatitis B infection
• B. Acute noninfectious phase
• C. Resolved infection
• D. Immune carrier state

Answer: (A)

Key idea: Hepatitis B markers together reveal the infection’s activity and infectivity level. When HBsAg is present, the person has an active HBV infection. If HBeAg is also present, the virus is actively replicating and the person is highly infectious. Anti-HBc positivity confirms exposure to HBV, and the absence of anti-HBs means there is no protective immunity. The lack of anti-HBe supports continued high replication. So this pattern most strongly indicates a highly infectious stage of hepatitis B infection. Why the others don’t fit: an acute noninfectious phase would typically show reduced replication markers like HBeAg and often positive anti-HBe as the immune response controls the virus. A resolved infection would have anti-HBs present, indicating immunity. An immune carrier state usually has ongoing HBsAg but reduced replication with anti-HBe present, not the combination described here.

Key idea: Hepatitis B markers together reveal the infection’s activity and infectivity level. When HBsAg is present, the person has an active HBV infection. If HBeAg is also present, the virus is actively replicating and the person is highly infectious. Anti-HBc positivity confirms exposure to HBV, and the absence of anti-HBs means there is no protective immunity. The lack of anti-HBe supports continued high replication. So this pattern most strongly indicates a highly infectious stage of hepatitis B infection.

Why the others don’t fit: an acute noninfectious phase would typically show reduced replication markers like HBeAg and often positive anti-HBe as the immune response controls the virus. A resolved infection would have anti-HBs present, indicating immunity. An immune carrier state usually has ongoing HBsAg but reduced replication with anti-HBe present, not the combination described here.