Saudi Arabia, more than 800 cases of Mers, with 286 deaths
There are more than 100 new cases of people infected with the virus, 34 of them have died. The origin of the infection is still uncertain. The researchers believe that the virus that causes the infection is transmitted by animals, but has not yet been demonstrated.

Riyad (AsiaNews/Agencies) - More than 100 more cases and 34 deaths from the new respiratory disease Mers have been reported by officials in Saudi Arabia.The cases date back to February and came to light after an analysis of hospital records.

The World Health Organization says there have now been 820 cases of Mers and 286 deaths.The exact source of the new infection is still uncertain, but camels are a prime suspect.The virus is from the same family as the common cold, but can lead to kidney failure and pneumonia.

The update from the Saudi authorities said there were 113 additional cases,76 of the patients recovered, three are still in hospital and 34 have died.Cases have also been confirmed in Jordan, Qatar, the United Arab Emirates, France, Germany, Italy, Tunisia, Egypt, the UK and the US, usually after a travel to Saudi Arabia.

Researchers believe the coronavirus that causes the infection crossed over from animals. Earlier this month, a report in the New England Journal of Medicine found "identical" Mers virus in camels and their owner.

However, the link had not been conclusively proven and some researchers argue there may be another source.The figures do show that nearly half of the cases were spread between people. It seems to have spread after close contact with family member or medical staff.

The World Health Organization does not recommend restrictions on trade or travel, but does warn people to avoid raw camel milk, and to ensure meat is properly cooked.