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?:abstract
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Background: From May to July 2015, the Republic of Korea experienced the largest outbreak of Middle East respiratory syndrome (MERS) outside the Arabian Peninsula A total of 186 patients, including 36 deaths, had been diagnosed with MERS-coronavirus (MERS-CoV) infection as of September 30th, 2015 Materials and Methods: We obtained information of patients who were confirmed to have MERS-CoV infection MERS-CoV infection was diagnosed using real-time reverse-transcriptase polymerase chain reaction assay Results: The median age of the patients was 55 years (range, 16 to 86) A total of 55 4% of the patients had one or more coexisting medical conditions The most common symptom was fever (95 2%) At admission, leukopenia (42 6%), thrombocytopenia (46 6%), and elevation of aspartate aminotransferase (42 7%) were observed Pneumonia was detected in 68 3% of patients at admission and developed in 80 8% during the disease course Antiviral agents were used for 74 7% of patients Mechanical ventilation, extracorporeal membrane oxygenation, and convalescent serum were employed for 24 5%, 7 1%, and 3 8% of patients, respectively Older age, presence of coexisting medical conditions including diabetes or chronic lung disease, presence of dyspnea, hypotension, and leukocytosis at admission, and the use of mechanical ventilation were revealed to be independent predictors of death Conclusion: The clinical features of MERS-CoV infection in the Republic of Korea were similar to those of previous outbreaks in the Middle East However, the overall mortality rate (20 4%) was lower than that in previous reports Enhanced surveillance and active management of patients during the outbreak may have resulted in improved outcomes FAU - Choi, Won Suk
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