One of Taiwan’s best-regarded hospitals transplanted organs from an HIV carrier into five patients. ''We deeply apologise for the mistake,’' the hospital said. The five are now being treated with anti-AIDS drugs, said an official at National Taiwan University Hospital in Taipei. The hospital said at the weekend the mistake occurred because a transplant staff member believed he heard the English word ''non-reactive’’ on the donor’s standard HIV test, which means negative, while the word ''reactive’’ was actually given.