Background. Coronavirus disease 2019 , caused by severe acute respiratory syndrome coronavirus 2 (SARS-CO-V-2), was first reported in Wuhan, Hubei province, China has now rapidly spread over 50 countries. For the prevention and control of infection, Taiwan Centers for Disease Control initiated testing of SARS-CoV-2 on January 24 th 2020 for persons suspected with this disease. Until February 28 th , 43 flu-like symptomatic patients were screened in China Medical University Hospital. Methods. Two patients were confirmed positive for SARS-CoV-2 infection by rRT-PCR as COVID-19 patients A and B. Causative pathogens for included patients were detected using FilmArray TM Respiratory Panel. We retrospectively analyzed the clinical presentations, laboratory data, radiologic findings, and travel and exposure contact histories, of the COVID-19 patients in comparison to those with other respiratory infections. Results. Through contact with Taiwan No. 19 case patient on 27 th January, COVID-19 patients A and B were infected. Both patients had no identified comorbidities and developed mild illness with temporal fever, persistent cough, and lung interstitial infiltrates. Owing to the persistence of positive SARS-CoV-2 in respiratory specimen, the two COVID-19 patients are still in the isolation rooms despite recovery until 10 th of March. The results of FilmArray TM Respiratory Panel revealed 22 of the 41 non-COVID-19 patients were infected by particular pathogens.In general, seasonal respiratory pathogens are more prevalent than SARS-CoV-2 in symptomatic patients in non-COVID-19 endemic area during the flu season. Since all patients shared similar clinical and laboratory findings, expanded surveillance of detailed exposure history for suspected patients and application of rapid detection tools are highly recommended.

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