A man, wearing a surgical mask as a precautionary measure against the novel coronavirus, walks near a hospital in Khobar city in Dammam May 21, 2013. Saudi Arabia has reported another case of ... more 

A man, wearing a surgical mask as a precautionary measure against the novel coronavirus, walks near a hospital in Khobar city in Dammam May 21, 2013. Saudi Arabia has reported another case of infection in a concentrated outbreak of a new strain of a virus that emerged in the Middle East last year and spread into Europe, the World Health Organization (WHO) said on May 18, 2013. REUTERS/Stringer less