Background Since December 2019, when coronavirus disease 2019 (Covid-19) emerged in Wuhan city and rapidly spread throughout China, more and more data from different area and different stages of disease have been needed.Methods In this retrospective, single-centre study, we included all 38 confirmed cases of Covid-19 in Weihai from Jan 24 to Feb 24, 2020. Patients were divided into group A by normal Oxygenation Index (OI), group B by abnormal OI (less than 400 mmHg).The dynamic changes in

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... al laboratory parameters were tracked from day 1 to day 32 after the onset of the disease at 4-day intervals. Cases were analyzed for clinical, radiological features and laboratory data. Outcomes were followed up until Feb 24, 2020.Results 38 patients with Covid-19 were included in this study, 68.42% patients were family clustered, and 97.37% patients had a history of exposure. The mean days between exposure and onset were about 5 days. Most patients were men, mean age was 43 years, 52.6% patients had chronic diseases. Most patients had fever or cough, about a third of patients had expectoration or fatigue, and 5 (13.16%) patients had shortness of breath.