Passengers wear masks to prevent contracting Middle East Respiratory Syndrome (MERS) at the Incheon International Airport in Incheon, South Korea, June 14, 2015. [Photo/Agencies]

BRATISLAVA - Tests show a 38-year-old South Korean man admitted to hospital in Slovakia with suspected Middle East Respiratory Syndrome (MERS) probably does not have the potentially deadly virus, the Slovak Health Ministry said on Sunday.

The ministry said three out of four tests came back negative and the fourth was on the upper limits but not positive.

Ministry spokesman Peter Bubla said the patient, who was taken to a Bratislava hospital on Saturday, would undergo further tests.

An outbreak of the virus in South Korea has infected 145 people and killed 14 of them since it was first diagnosed in May in a businessman who had returned from a trip to the Middle East.

The outbreak is the largest outside Saudi Arabia, where the disease was first identified in humans in 2012, and has stirred fears in Asia of a repeat of a 2002-2003 scare when Severe Acute Respiratory Syndrome (SARS) killed about 800 people worldwide.

MERS is caused by a coronavirus from the same family as the one that caused SARS. It is more deadly than SARS but does not spread as easily.

Slovakian media reported the man was taken to Bratislava from the city of Zilina, 200 km (125 miles) to the north. The area is home to a Kia Motors factory, and the reports said the man worked for a subcontractor of the South Korean carmaker and had been staying in a hotel in Zilina.