A former health worker who had been diagnosed with Hepatitis C is now known to have transmitted the virus to two other patients.
Aneurin Bevan Health Board launched an exercise in September after it was revealed that the worker, who was involved in obstetrics and gynaecology, had unknowingly passed on the virus to two people between 1984 and 2003.
They worked predominantly at Caerphilly District Miners' Hospital, but also for a short time at the old East Glamorgan Hospital in ChurchVillage near Pontypridd and Wrexham Maelor Hospital.
More top news
Showers this evening with heavier and more persistent rain arriving overnight. A wet start tomorrow but improving during the afternoon.
A mother from Neath has told how her teenage son collapsed and was left unconscious for five hours after taking a so-called legal high.
Two brothers from Cardiff are campaigning for their cousin's murder to be re-investigated, 76 years after she died.