Box 1.

Brief Summary of Available Literature on SARS-CoV-2 Shedding

Duration of Viral Shedding in Respiratory Samples	Duration of Viral Shedding in Stool/Rectal Samples
The pooled median duration of viral RNA shedding in all severities of illness from respiratory isolates is 18.4 d (95% CI, 15.5–21.3). Intermittent RNA shedding up to 92 d after symptom onset has been observed. Viable virus has been isolated via culture from −6 to 20 d relative to symptom onset. Duration of RNA shedding exceeds the duration of viable virus shedding from 13 to 45 d.	Viral RNA shedding in stool has not been consistently observed. The pooled median duration of viral RNA shedding is 22.1 d (95% CI, 14.4–29.8). Viral RNA shedding up to 55 d after diagnosis has been observed. Viable virus has been isolated via culture of stool on day 19 of illness. Detection of stool RNA may lag behind detection of respiratory RNA by PCR.