肺结核病人在化疗后期或在化疗结束后随访期可出现孤立的结核菌阳性培养(以下简称IPC)——指每月一次的连续阴性培养中孤立地出现一次阳性培养,其生长的菌落较少,对抗结核药物常为敏感。IPC的来源仍不明确,可能从病人的病灶来的或在实验室内将阳性标本中的细菌转移至阴性标本或由于贴错标签或记录错误等笔误而引起。本文即报告1970年4月～1977年8月在非洲三个国 Tuberculosis patients may have isolated M. tuberculosis positive culture (later referred to as IPC) during the late chemotherapy or follow-up period after the chemotherapy is finished - refers to a positive culture occurring once in a row in a continuous negative culture once a month with less colony growth, Anti-tuberculosis drugs are often sensitive. The source of the IPC remains unclear and may be caused by the transfer of bacteria from positive specimens to negative specimens from the patient’s lesion or within the laboratory or from clerical errors such as mislabeling or misrecorded errors. This article reports from April 1970 to August 1977 in three African countries