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Map of reported Middle East respiratory syndrome cases.
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Almost all left Saudi Arabia by the end of November. As of 1 December 2013, 160 confirmed MERS cases have been reported worldwide, of whom 68 (42.5%) have died (Fig. 1) 5.
Herd of camels at the Hajj site in Mina, Makkah.
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Sacrificing four-footed animals, including a small proportion of camels, is part of the Hajj rituals, and between 1 and 2 million animals are sacrificed at designated abattoirs located within walking distance of pilgrims' tents (Fig. 2).