The 7 patients with HAV/HBV superimposed infection include one case of severe chronic active hepatitis and six cases of chronic active hepatitis, HAV /HBV superimposed infection was not found in chronic persistent hepatitis B.

• 本组慢性乙型肝炎患者重叠感染甲肝病毒7例；占5.；8%25；均为慢性活动性肝炎。