JEDDAH, Saudi Arabia: Saudi health authorities have reported the deaths of another two men from the MERS (Middle East Respiratory Syndrome) coronavirus, bringing the death toll from the respiratory disease in the worst hit country to 66. A 70-year-old national, who died in the Red Sea port city of Jeddah, had also been suffering from chronic illnesses, the health ministry said in a late Sunday statement. The second victim was a medic, also in Jeddah, where the ministry reported four new cases of the disease. The latest deaths brought the total number of cases in Saudi Arabia to 167 people since MERS first appeared in the kingdom in September 2012. Experts are struggling to understand the disease, for which there is no known vaccine.