Hu, Z., Song, C., Xu, C., Jin, G., Chen, Y., & Xu, X. et al. (2020). Clinical characteristics of 24 asymptomatic infections with COVID-19 screened among close contacts in Nanjing, China. Science China Life Sciences, 63(5), 706-711. https://doi.org/10.1007/s11427-020-1661-4

Clinical characteristics of 24 asymptomatic infections with COVID-19 screened among close contacts in Nanjing, China

University of Michigan - Ann Arbor

A communicable period is defined as the interval from the first day of positive ribonucleic acid test to the first day of continuous negative test. For COVID-19, the communicable period has been established as two days before onset of symptoms until three days of symptom relief and no fever. 

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