The 5 cases were in Kuwait, the UAE, and Saudi Arabia; 2 proved fatal; and 1 involved contact with camels.
In other dromedary news, research on camels' possible role is under way in Qatar.
All MERS case-patients are from Riyadh, and at least 3 of them are in one family.
The man owns a farm and is hospitalized. The WHO also confirmed 2 other cases.
The WHO added a few details today as it confirmed two previously reported MERS cases in Saudi Arabia.
New York City's health department said yesterday that a rare skin disease has been identified in 30 people who handled live or raw fish or seafood bought in Chinatown markets in Manhattan, Brooklyn, or Queens.
Saudi Arabia's Ministry of Health (MOH) announced two new Middle East respiratory syndrome coronavirus (MERS-CoV) infections today, one of them fatal.
A WHO spokesman said tests so far have not confirmed MERS in an Egyptian woman.
The Egyptian woman died after returning from a religious pilgrimage to Saudi Arabia.
The findings add to the evidence suggesting camels may be a source of human infections.
