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BackgroundSince December 2019, Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)-infected disease (Coronavirus Disease 2019,COVID-19) emerged in Wuhan, China,and rapidly spread throughout China,even throughout the world. We try to describe the epidemiological and clinical characteristics of COVID-19 in non-Wuhan area,and explore its effective treatment. MethodsRetrospective, single-center case series of the 51 hospitalized patients with confirmed COVID-19 at Chongqing University Three Gorges Hospital in Chongqing, China, from January 20 to February 3, 2020;The discharge time was from January 29 to February 11, 2020. The main results and indicators of epidemiology, demography, clinical manifestation, laboratory examination, imaging data and treatment data of 51 patients with covid-19 were collected and analyzed. The changes of blood routine and biochemical indexes at discharge and admission were compared. Compare the clinical characteristics of severe patients (including severe and critical patients) and non-severe patients (general patients). ResultsOf 51 hospitalized patients with COVID-19, the median age was 45 years (interquartile range, 34-51; range, 16-68 years) and 32 (62.7%) were men.43(84.3%) patients had been to Wuhan or Other Hubei areas outside Wuhan,and 4(7.7%) patients had a clear contact history of COVID-19 patients before the onset of the disease, and 4 (7.7%) patients had no clear epidemiological history of COVID-19.Common symptoms included fever (43 [84.3%]), cough (38 [74.5%]) and fatigue (22 [43.1%]). Lymphopenia was observed in 26 patients (51.0%), and elevated C-reactive protein level in 32 patients (62.7%). Ground-glass opacity was the typical radiological finding on chest computed tomography (41 [80.4%]),Local consolidation of pneumonia in some patients(17 [33.3%]).Most of the patients were treated with traditional Chinese medicine decoction (28 [54.9%]),all of them received aerosol inhalation of recombinant human interferon a-1b for injection and oral antiviral therapy with Lopinavir and Ritonavir tablets (51 [100%]); Most of the patients were given Bacillus licheniformis capsules regulated intestinal flora treatment (44 [86.3%]). 10 patients (19.6%) received short-term (3-5 days) glucocorticoid treatment. Compared with non-severe patients (n = 44), severe patients (n = 7) were older (median age, 52 years vs 44 years), had a higher proportion of diabetes mellitus (4 [57.1%] vs 0 [0.0%]), most of them needed antibiotic treatment (7 [100%] vs 4 [9.1%], most of them needed nutritional diet (6 [85.7%) vs 0 [0.0%], and were more likely to have dyspnea (6 [85.7%] vs 5 [11.4%]),most of them needed noninvasive mechanical ventilation (6 [85.7%] vs 0 [0.0%]). Except one patient died, the remaining 50 patients were discharged according to the discharge standard, the common clinical symptoms disappeared basically, the lymphocyte increased significantly (P=0.008), CRP decreased significantly (P <0.001). The median length of stay was 12 days (IQR, 9-13). ConclusionIn 51 single center cases confirmed as COVID-19 and discharged from the hospital, 13.7% of the patients were severe. The main clinical symptoms of patients with COVID-19 were fever, cough and asthenia,Some patients had obvious dyspnea. They had clinical laboratory and radiologic characteristics. There is no specific drug treatment for the disease. For the treatment of COVID-19, in addition to oxygen inhalation and antiviral treatment, attention should be paid to the dialectical treatment of traditional Chinese medicine, regulation of intestinal flora, nutritional support treatment and other comprehensive treatment.