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Background  The outbreak of COVID-19 has resulted in serious concerns in China and abroad. To investigate clinical features of confirmed and suspected patients with COVID-19 in west China, and to examine differences between severe versus non-severe patients.    Methods  Patients admitted for COVID-19 between January 21 and February 11 from fifteen hospitals in Sichuan Province, China were included. Experienced clinicians trained with methods abstracted data from medical records using pre-defined, pilot-tested forms. Clinical characteristics between severe and non-severe patients were compared.    Results  Of the 169 patients included, 147 were laboratory-confirmed, 22 were suspected. For confirmed cases, the most common symptoms from onset to admission were cough (70·7%), fever (70·5%) and sputum (33·3%), and the most common chest CT patterns were patchy or stripes shadowing (78·0%); throughout the course of disease, 19·0% had no fever, and 12·4% had no radiologic abnormality; twelve (8·2%) received mechanical ventilation, four (2·7%) were transferred to ICU, and no death occurred. Compared to non-severe cases, severe ones were more likely to have underlying comorbidities (62·5% vs 26·2%,  P  = 0·001), to present with cough (92·0% vs 66·4%,  P  = 0·02), sputum (60·0% vs 27·9%,  P  = 0·004) and shortness of breath (40·0% vs 8·2%,  P  <  0·0001), and to have more frequent lymphopenia (79·2% vs 43·7%,  P  = 0·003) and eosinopenia (84·2% vs 57·0%,  P  = 0·046).    Conclusions  The symptoms of patients in west China were relatively mild, and an appreciable proportion of infected cases had no fever, warranting special attention.    Supplementary Information  The online version contains supplementary material available at 10.1186/s12879-021-05825-1.

Clinical characteristics of inpatients with coronavirus disease 2019 (COVID-19) in Sichuan province