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
High infectivity in Hepatitis infection is shown by: 
Select and explain. 
A. HBsAg positive, B. HBcAg positive, C. HBeAg positive, D. IgM anti HBc
C: HBeAg positive
Answer: C: HBeAg positive 
Explanation: Ans: c (HBeAg positive) Ref: Ananthanarayanan, 7th ed, p. 555HBsAg positive - Indicates HBV infection- First virological marker detectableHBsAg positive; IgM Anti HBc positiveHBsAg positive; IgG Anti HBc positiveHBeAg positiveHBVDNAAnti HBsAg positive; Anti HBc negativeAnti HBsAg positive; IgG Anti HBc cpositive- Active infection- Remote infection- High infectivity, Qualitative marker of replication- Quantitative marker of replication- Vaccination- Recovery phase