Certification Board of Infection Control and Epidemiology (CBIC) 2025 – 400 Free Practice Questions to Pass the Exam

The serological presence of +HbsAG, indicating the Hepatitis B surface antigen, signifies that a person is currently infected with the Hepatitis B virus. This antigen is a protein on the surface of the virus and is the first detectable marker during acute infection. Its presence in the serum typically suggests an active infection and that the individual may be infectious to others.

In the context of interpreting the test results, this finding is particularly important for identifying individuals who could pose a risk of transmission of the virus, which aligns with the description of a potentially infectious carrier state. In many cases, if HbsAG remains present for more than six months, it indicates that the person may be a chronic carrier of the virus, increasing the likelihood of ongoing infectivity.

The other options do not accurately reflect what a positive HbsAG result indicates. Complete recovery from infection would typically be associated with the presence of anti-HBs antibodies and a negative HbsAG. A negative result for Hepatitis B would not show any forms of active markers such as HbsAG. Lastly, immune protection against Hepatitis B is indicated by the presence of anti-HBs antibodies, not HbsAG. Thus, the interpretation that +HbsAG reflects a potentially infectious carrier state