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对一起甲型肝炎水型暴发流行疫区人群１４２８例进行肝功能（ＳＧＰＴ、ＳＴＢＩＬ）和抗－ＨＡＶＩｇＭ普查。结果异常者２３５例，符合急性肝炎诊断的１２９例，占９．０３％；抗－ＨＡＶＩｇＭ阳性１１４例，占７．９８％；单项ＳＧＰＴ增高１０３例，占７．２０％；ＳＧＰＴ合并ＳＴＢＩＬ异常８７例，占６．０９％；抗－ＨＡＶＩｇＭ阳性合并ＳＧＰＴ、ＳＴＢＩＬ异常的６９例，占４．８％；单项抗－ＨＡＶＩｇＭ阳性３例，占０．２１％。结果提示：若只依靠某一项结果异常就诊断，会导致人为地扩大管理传染源的范围或失去管理传染源的机会，只有尽早进行联合检测，才能及时、准确地发现传染源，采取措施控制疫情。
A total of 1428 cases of hepatitis A virus outbreak endemic areas were investigated for liver function (SGPT, STBIL) and anti-HAVIgM. The results were abnormal in 235 cases, in line with the diagnosis of acute hepatitis in 129 cases, accounting for 9.03%; anti-HAVIgM positive in 114 cases, accounting for 7.98%; single SGPT increased 103 cases, accounting for 7.20%; SGPT with STBIL abnormalities 87 Cases, accounting for 6.09%; anti-HAVIgM positive SGPT, STBIL abnormal 69 cases, accounting for 4.8%; single anti-HAVIgM positive in 3 cases, accounting for 0.21%. The results suggest that relying on the diagnosis of only one abnormal result may lead to artificially widening the scope of the management of the source of the infection or losing the chance of managing the source of the infection. Only by carrying out the joint detection as soon as possible can the source of the infection be found timely and accurately and the measures taken to control epidemic.