Passengers wearing masks to prevent contracting Middle East Respiratory Syndrome (MERS) shop at a duty-free store at the Incheon International Airport in Incheon, South Korea, June 14, 2015. A South Korean hospital suspended most services on Sunday after being identified as the epicentre of the spread of a deadly respiratory disease that has killed 15 people since being diagnosed in the country nearly four weeks ago. REUTERS/Kim Hong-Ji