The Middle East Respiratory Syndrome Coronavirus is an illness caused by a virus called coronavirus. The illness affects the respiratory system, especially the lung tissue and airways. This new form of the virus was first discovered in Saudi Arabia in 2012 before spreading to neighboring countries such as France, Italy, Jordan, Tunisia and Qatar. The first MERS-CoV patient in Thailand was a man who had just returned from a trip to Oman. At first, almost 60-70 percent of all MERS-CoV patients had died, but the percentage has now decreased to twenty to thirty percent. However, the virus still remains highly contagious and may be dangerous, especially in large groups.