SEOUL, Ramadan 4, 1436, Jun 21, 2015, SPA -- Three new cases of MERS were registered in South Korea over past 24 hours, thus the total number of the infected reached 169, TASS quoted the healthcare ministry as sayingon Sunday. South Korea registered the first case on May 20. The virus was brought to the country by its national who had returned from a trip to the Middle East countries. Most MERS-CoV patients develop severe acute respiratory illness, including fever, cough, and trouble breathing. --SPA 13:05 LOCAL TIME 10:05 GMT www.spa.gov.sa/w