This is another blind spot which exists in the treatment and prevention of the disease. Twu Shiing Jer, director of the Taipei City Bureau of Health, says that when a hospital diagnoses an HIV infection, it is almost impossible to trace its origin.
此一問題也造成防治上的盲點，塗醒哲指出，醫院發現感染者想往上追感染來源，幾乎都查不到。