This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Serological testing of patient shows HBsAg, IgM Anti-HBc and HBeAg positive . The patient has- 
Select and explain. 
A. Chronic hepatitis B with low infectivity, B. Acute hepatitis B with high infectivity, C. Chronic hepatitis with high in fectivity, D. Acute on chronic hepatitis
B: Acute hepatitis B with high infectivity
Answer: B: Acute hepatitis B with high infectivity 
Explanation: HBs Ag is the first marker appear in the blood after infection. Anti HBc is the earliest antibody seen in blood. HBeAg indicates infectivity REF:MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE.546&547