COVID-19 Research Paper Volume 12, Issue 22 pp 22399—22404
Impact of age on duration of viral RNA shedding in patients with COVID-19
- 1 Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan 430000, China
- 2 State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China
Received: June 2, 2020 Accepted: September 9, 2020 Published: November 20, 2020https://doi.org/10.18632/aging.104114
How to Cite
Copyright: © 2020 Zhou et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Background: The aim of this study was to investigate the host factors of patients with COVID-19 that were associated with delayed viral RNA clearance in specimens obtained from the upper respiratory tract.
Results: A median of a 32-day period of viral RNA shedding was observed, ranging from 4 days to 111 days. On multivariate analysis, elderly age was independently associated with prolonged viral shedding (OR = 1.02, 95% CI: 1.01–1.04, P = 0.003). An incremental increase in the duration of viral RNA shedding was observed with increasing age (P < 0.05). The median (quartile) duration of viral RNA shedding was 23 (22) days (≤ 40 years), 30 (18) days (41–50 years), 33 (21) days (51–60 years), 34 (17) days (61–70 years) and 34 (17) days (> 70 years).
Conclusions: Viral RNA shedding can persist for as long as 111 days in the upper respiratory tract. Increasing age is associated with viral RNA persistence.
Method: The demographic and virological data of patients with laboratory-confirmed COVID-19 were retrospectively analyzed. A multivariate logistic regression analysis was performed to identify significant risk factors associated with delayed viral RNA clearance. The duration of viral shedding was compared among age-stratified groups.