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Microbiology Misc. df84f66f

Serological testing of patient shows HBsAg, IgM anti- HBc and HBeAg positive. The patient has

A
Chronic hepatitis B with low infectivity
B
Acute hepatitis B with high infectivity
C
Chronic hepatitis with high infectivity
D
Acute on chronic hepatitis
High-Yield Explanation
(B) Acute hepatitis B with... COMMONLY ENCOUNTERED SEROLOGIC PATTERNS OF HEPATITIS B INFECTIONHBsAgAnti-HBsAnti-HBcHBeAgAnti-H BeInterpretation+-IgM+HIAcute hepatitis B, high infectivity+-IgG+-Chronic hepatitis B, high infectivity+-IgG-+1. Late acute or chronic hepatitis B, low infectivity2. HBeAg-negative ("precoremutant") hepatitis B (chronic or, rarely, acute)++++/-+/-1. HBsAg of one subtype and heterotypic anti-HBs (common)2. Process of seroconversion from HBsAg to anti-HBs (rare)--IgM+/-+/-1. Acute hepatitis B2. Anti-HBc "window"--IgG-+/-1. Low-level hepatitis B carrier2. Hepatitis B in remote past-+IgG-+/-Recovery from hepatitis B-+---1. Immunization with HBsAg (after vaccination)2. Hepatitis B in the remote past (?)3. False-positive

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