Hepatitis B surface antigen
Transmission
Sexual, parenteral, perinatal, direct contact between individuals.
Clinical Signs
Asymptomatic in 90% of cases.
Cure
95% of cases (adults).
Complications
Cirrhosis and hepatocellular carcinoma.
Development of chronic form
Yes (5% of adult cases).
Prevention
Vaccination ++++; specific IgG.
Main Marker
HBS Ag, anti HBc IgM, total anti HBc Ab, Anti-HBs Ab, HBe Ag, Anti-HBe Ab, HBV DNA.