Riyadh March 3: Four more people have died of the Middle East Respiratory Syndrome coronavirus (MERS-Cov) raising the toll to 400 a media report said on Tuesday. The health ministry on Monday said all the victims were male Arab News reported. Three of the victims aged 91 89 and 60 were from Riyadh and the fourth was a 45-year-old foreign worker in the central city of Buraidah the ministry said. (Read: MERS-CoV claims two more lives in Saudi Arabia; death toll rises to 363) All four fatalities had pre-existing diseases prior to catching the coronavirus. Most other MERS deaths have