抗-HAVIgM出现于甲肝病程的早期,故可作为甲肝的早期诊断依据;抗-HAVIgG出现于甲肝病程的晚期及恢复期,可视为甲肝既往感染的标记。 HBsAg阳性是HBV感染的标记,既可能是现症的乙肝患者,也可能是无症状的HBsAg携带者,它可以出现于乙肝患者的各个病期。HBsAg阳性血清具有一定的传染性。抗-HBs阳性是保护性的免疫标记,出现于疾病的恢复期和无感染者的免疫接种后。慢性活动性肝炎患者往往抗-HBs产生不足。有人认为急 Anti-HAVIgM appears in the early stage of hepatitis A disease, it can be used as an early diagnosis of hepatitis A; anti-HAVIgG appears in the late course of hepatitis A and convalescent, can be regarded as a marker of previous infection of hepatitis A. HBsAg positive is a marker of HBV infection, either in patients with existing hepatitis B may also be asymptomatic HBsAg carriers, it can occur in all stages of hepatitis B patients. HBsAg positive serum has some contagious. Anti-HBs positive is a protective immunological marker that appears after the convalescence of the disease and after immunization of the uninfected. Chronic active hepatitis patients often have insufficient anti-HBs. Some people think it urgent