5,500 patients in several parts of Wales are being contacted by health boards this week, over fears that they may have been passed the Hepatitis C virus by a healthcare worker.
Obstetric and gynaecology patients will receive letters, offering them advice and a blood test for Hepatitis C.
The worker, who has now retired, is known to have transmitted the virus to two patients between 1984 and 2003.
They worked in the Aneurin Bevan health board area between 1984 and 2003, predominantly at Caerphilly District Miners' Hospital.
They also briefly worked at the East Glamorgan General Hospital in Pontypridd in 1984, and at Wrexham Maelor Hospital (known then as Maelor General Hospital) in 1978.
More top news
ITV Wales research shows councils are chasing about £80 million of unpaid council tax. The WLGA have said collection rates are over 97%.
I admit it's not the most cheerful of starts out there this morning, but hang on in there because the sun will show it's face this morning!
Drizzle gives way to more substantial rain which will push in to western areas during the second half of tonight!