A dangerous nuzzle? A man in western Abu Dhabi hugs a camel brought in from Saudi Arabia for beauty contests. Middle East respiratory syndrome circulates in camels across the Arabian Peninsula. Dave Yoder/National Geographic hide caption

itoggle caption Dave Yoder/National Geographic

Fearful of catching the MERS virus, workers wear masks during a soccer match on April 22 at King Fahad stadium in Riyadh. Fayez Nureldine/AFP/Getty Images hide caption

itoggle caption Fayez Nureldine/AFP/Getty Images