Duration of Viral Shedding:
The duration of time (days) for which the virus concentration, V , exceeds 100 copies/mL, which is often the lower limit of detection for qPCR assays for SARS-CoV-2 [19]. This duration of viral shedding metric summarizes the amount of time virus is detectable which is considered a correlate with the time a patient is infectious. Reducing duration of detectable virus thereby impacts transmission dynamics and risk to other within a population, but also may impact on the duration of isolation, containment or hospitalization of a patient, even if it does not correlate directly with individual patient’s signs and symptoms.