Conclusions Exogenous reinfection was a major cause of tuberculosis recurrence in Shanghai. 结论外源性再感染是上海地区结核病复发的重要原因;
Results In respect of the location, newly detected tuberculosis widely distributed into bilateral lungs ( 46%), reinfection tuberculosis mostly distributed into upper fields of the lung ( 43%). 结果就发病部位而言,新感染结核以双肺广泛分布最多见(46%),再感染结核以两肺上野最多见(43%)。