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Recent data from the World Health Organization show that as of September 30, Middle East respiratory syndrome coronavirus (MERS-CoV) had infected 130 people in 8 countries, resulting in 58 deaths.
Since the first case was reported in September 2012, all infections have been linked with traveling or living in Saudi Arabia, Qatar, Jordan, and the United Arab Emirates. The median age of those with confirmed infection is 50 years and the male-female ratio among cases is 1.6 to 1. Most reported cases have involved severe respiratory illness requiring hospitalization, but in 21% of the infections, patients have had mild or no symptoms. The number of contacts infected by people with confirmed infections appears to be limited.
Middle East Coronavirus Infections Surpass 100; Fatality Rate is 45%. JAMA. 2013;310(20):2142. doi:10.1001/jama.2013.281549