A patient in Slovakia is being tested for a suspected case of the potentially deadly MERS virus.
If confirmed, it would be the first case in Europe since an outbreak of the respiratory in South Korea.
The South Korean citizen was admitted to hospital in Bratislava yesterday, having arrived in Slovakia almost 2 weeks ago.
The first cases of MERS emerged in the Middle East in 2012 - the disease has no known cure and is fatal in a third of cases.
Authorities in South Korea have reported 7 new cases, bringing the total number of infections to 145 - 14 people are known to have died.