Since first reported in Saudi Arabia in 2012, 2,400-plus Middle East respiratory syndrome coronavirus (MERS-CoV) cases reported in 27 countries, including more than 800 fatalities.

Since the beginning of the year, 117 cases have been reported in two countries–Saudi Arabia (104) and Oman (13). Some two dozen fatalities have been recorded.

In Saudi Arabia, the cities of  Wadi Aldwasir and Riyadh have seen the bulk of the cases.

Most MERS patients developed severe acute respiratory illness with symptoms of fever, cough and shortness of breath. About 3 to 4 out of every 10 patients reported with MERS have died.

In addition to humans, MERS-CoV has been found in camels in several countries.