The TB diagnostic test currently in use, the smear sputum test, only detects about half of all cases with tuberculosis. This falls to one third in HIV positive patients.

• 目前结核病的检验方法即痰涂片检查,只能验出约半数感染结核病的人,至于爱滋病人感染结核病,更只能验出其中的三分之一。