A thiy year man presented with nausea, fever and jaundice of 5 days duration. The biochemical tests revealed a bilirubin of 6.7 mg/dl (conjugated 5.0 mg/dl) with SGOT/SGPT (AST/ALT) of 1230/ 900 IU/ml. The serological tests showed presence of HBsAg, IgM anti HBc and HBe Ag. The most likely diagnosis –

**Core Concept**
The patient's presentation of jaundice, elevated bilirubin levels, and abnormal liver enzymes, along with the presence of HBsAg, IgM anti-HBc, and HBeAg, suggests an acute viral hepatitis infection. The patient's elevated AST and ALT levels indicate hepatocellular injury, whereas the presence of HBsAg and HBeAg suggests active viral replication.

**Why the Correct Answer is Right**
The presence of HBsAg indicates a current HBV infection, while IgM anti-HBc suggests acute infection. HBeAg is a marker of viral replication, indicating that the patient is highly infectious. The elevated AST and ALT levels confirm hepatocellular injury, a hallmark of acute viral hepatitis.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not account for the presence of HBsAg and IgM anti-HBc, which are specific markers of acute HBV infection.

**Option B:** This option is incorrect because it does not explain the patient's elevated AST and ALT levels, which are indicative of hepatocellular injury.

**Option C:** This option is incorrect because it does not account for the presence of HBeAg, which is a marker of viral replication and indicates that the patient is highly infectious.

**Clinical Pearl / High-Yield Fact**
Acute viral hepatitis can present with a range of symptoms, including jaundice, nausea, and fever. The presence of HBsAg, IgM anti-HBc, and HBeAg is highly suggestive of acute HBV infection, and patients with these markers should be isolated to prevent transmission to others.

**Correct Answer:** D. Acute Hepatitis B

✓ Correct Answer: B. Acute hepatitis B infection with high infectivity