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经血液传播的非甲非乙型肝炎易于慢性化,危害严重。以前的研究发现,只有不到50%的非甲非乙型肝炎病例是经输血和静脉注射毒品感染。为了确定其它危险因素,作者在1987~1991年间选择意大利那不勒斯的三所医院进行了非甲非乙型肝炎危险因素的病例对照研究。 研究对象的转氨酶水平至少高于正常上限3倍,抗-HAV和HBcAg均为阴性;排除创伤性、酒精性和药物性等肝脏疾病,共
Blood-borne non-A, non-B hepatitis is easily chronic and dangerous. Previous studies found that less than 50% of non-A, non-B hepatitis cases were infected with transfusions and intravenous drugs. To identify other risk factors, the authors selected a case-control study of risk factors for non-A, non-B hepatitis in three hospitals in Naples, Italy, between 1987 and 1991. The subjects of the transaminase level at least three times the upper limit of normal, anti-HAV and HBcAg were negative; excluding traumatic, alcoholic and drug-induced liver disease, a total of