Chronic hepatitis B infection

A viral disease caused by hepatitis Bvirus, usually transmitted by injection of infected blood or blood derivatives or by use of contaminated needles, lancets, or other instruments. the incubation period averages about 90 days with a range of 40- 180 days. in the prodromal phase there may be fever, malaise, anorexia, nausea, and vomiting, which decline with the onset of clinical jaundice, and urticaria, angioedema, arthiritis, or, rarely, glomerulonephritisor a serum sickness.