Ten people have caught the Mers coronavirus after an outbreak in the haemodialysis unit of a hospital in Saudi Arabia, reported the World Health Organization on Tuesday.
No further details were given as to how the virus has spread within the hospital.
Since Mers emerged in September 2012, 1,935 cases have been confirmed and there have been at least 690 related deaths, WHO said.
The latest outbreak, at Wadi Al Dawasir in Riyadh province, began at the end of February, when a 32-year-old woman and a 31-year-old man showed symptoms.
They were hospitalised in the first few days of March, and both were confirmed to have Mers on March 4.
The report further said that contact tracing found eight symptomatic and two asymptomatic cases. Two of those infected were health workers.
None of the patients in the outbreak have yet died, WHO said, although Mers generally kills about 36 per cent of sufferers.
In mid-2015, an outbreak in South Korea, started by a man who had travelled in the Arabian Gulf, caused 186 cases within two months.
