Prolonged Persistence of SARS-CoV-2 RNA in Body Fluids

Abstract

We prospectively assessed 49 coronavirus disease cases in Guangdong, China, to estimate the frequency and duration of detectable severe acute respiratory syndrome coronavirus 2 RNA in human body fluids. The prolonged persistence of virus RNA in various body fluids may guide the clinical diagnosis and prevention of onward virus transmission.

Keywords: 2019 novel coronavirus disease; COVID-19; China; Guangdong; RNA; SARS-CoV-2; coronavirus; coronavirus disease; persistence; respiratory infections; severe acute respiratory syndrome coronavirus 2; viruses; zoonoses.

Figure 1

Time until clearance of severe acute respiratory syndrome coronavirus 2 RNA in throat swab, sputum, nasopharyngeal, and feces samples among hospitalized patients with coronavirus disease, as estimated with the use of Weibull regression, Guangdong, China. A, B) Throat swab specimens from patients with mild (A) and severe (B) cases; C, D) sputum samples from patients with mild (C) and severe (D) cases; nasopharyngeal swab samples from patients with mild (E) and severe (F) cases; G, H) feces samples from patients with mild (G) and severe (H) cases. A total of 43 patients with mild and 6 with severe cases were tested. The medians and 95th percentiles of the time until the loss of detection are indicated; error bars and shading indicate 95% CIs.

Figure 2

Time until clearance of severe acute respiratory syndrome coronavirus 2 RNA in any clinical specimens of throat swab, sputum, nasopharyngeal swab, or feces samples among hospitalized patients with coronavirus disease, as estimated with the use of Weibull, Lnorm, and gamma regression, Guangdong, China. A, B) Weibull regression for mild (A) and severe (B) cases; C, D) Lnorm regression for mild (C) and severe cases (D); E, F) gamma regression for mild (E) and severe (F) cases. A total of 43 patients with mild and 6 with severe cases were tested. The medians and 95th percentiles of the time until the loss of detection are indicated; error bars and shading indicate 95% CIs.