In this photo taken Friday, May 31, 2013, a boy leads camels at a weekly camel market in Birqash, Egypt. Scientists have found a clue that suggests camels may be involved in infecting people in the ... more 
In this photo taken Friday, May 31, 2013, a boy leads camels at a weekly camel market in Birqash, Egypt. Scientists have found a clue that suggests camels may be involved in infecting people in the Middle East with the MERS virus. In a preliminary study published on Friday, Aug. 9, 2013, European scientists found traces of antibodies against the MERS virus in dromedary, or one-humped, camels, but not the virus itself. (AP Photo/Hiro Komae) less 
1 / 27
Associated Press | Photo By Hiro Komae
Thu, Aug 8, 2013 5:16 PM EDT