Factors associated with the duration of viral shedding in adults with COVID-19 outside of Wuhan, China: a retrospective cohort study
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Objectives: To investigate factors associated with the duration of viral shedding in patients with COVID-19, outside of Wuhan. Methods: In this retrospective cohort study, patients with laboratory-confirmed COVID-19 in Changsha, China were included. Clinical characteristics, laboratory findings,treatment, and outcome were retrieved. Univariate and multivariate analyses were performed to explore potential factors. Results: Overall, 147 patients with COVID-19 were included. The median duration of viral shedding (the number of days from symptoms onset until the successive negative detection of SARS-CoV-2 RNA) was 17 days (interquartile range [IQR], 12–21). Multivariate Logistic regression analysis indicated that the highesttemperature at admission (odds ratio [OR], 5.200; 95% confidence interval [CI]: 1.190 22.726; p = 0.028), time from symptom onset to admission (OR, 1.740; 95% CI: 1.296 2.337; p < 0.001) and hospital length of stay (OR, 1.604; 95% CI: 1.262 2.040; p < 0.001) were risk factors for prolonged duration of viral shedding. Conclusions: This study, with a relatively large sample size, focused on the duration of viral shedding and related factors in patients with COVID-19, outside of Wuhan, China. Potential risk factors were identified and should be taken into consideration for the strategy of quarantining infected patients.
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