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930 Microbiology

A major step in the pathogenesis of listeriosis is –

AThe formation of antigen-antibody complexes with resultant complement activation and tissue damage
BThe release of hyaluronidase by L. monocytogenes, which contributes to its dissemination from local sites
CThe antiphagocytic activity of the L. monocytogenes capsule
DThe survival and multiplication of L'. monocytogenes within mononuclear phagocytes and host epithelial cells
Microbiology
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933 Microbiology

A thirty-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) 1230/900 IU/ ml The serological tests showed presence of HBsAg , IgM anti HBc and HBeAg . The most likely diagnosis:

AChronic hepatitis B infection with high infectivity
BAcute hepatitis B infection with high infectivity
CChronic hepatitis B infection with low infectivity
DAcute hepatitis B infection with low infectivity
Microbiology
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