Severe Acute Respiratory Syndrome Coronavirus 2 Viremia Is Associated With Coronavirus Disease 2019 Severity and Predicts Clinical Outcomes

Clinical Infectious Diseases - Tập 74 Số 9 - Trang 1525-1533 - 2022
Jana L. Jacobs1, William Bain2,3,4, Asma Naqvi1, Brittany Staines1, Priscila M. S. Castanha5, Haopu Yang6,3,7, Valerie F. Boltz8, Simon M. Barratt‐Boyes5, Ernesto T. A. Marques5, Stephanie L. Mitchell9, Barbara A. Methé6,3, Tolani F. Olonisakin3, Ghady Haidar1, Thomas W. Burke10, Elizabeth Petzold10, Thomas N. Denny11, Chris W. Woods10,11, Bryan J. McVerry3, Janet Lee2,3, Simon C. Watkins12, Claudette M. St. Croix12, Alison Morris6,3, Mary F. Kearney8, Mark S. Ladinsky13, Pamela J. Björkman13, Georgios D. Kitsios2,6,3, John W. Mellors1
1Department of Medicine, Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania USA
2Acute Lung Injury Center of Excellence, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
3Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
4Veteran's Affairs Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, USA
5Department of Infectious Diseases and Microbiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, Pennsylvania, USA
6Center for Medicine and the Microbiome, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
7School of Medicine, Tsinghua University, Beijing, China
8HIV Dynamics and Replication Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland, USA
9Department of Pathology, University of Pittsburgh, School of Medicine, Pittsburgh, Pennsylvania USA
10Center for Applied Genomics and Precision Medicine, Duke University, Durham, North Carolina, USA
11Duke Human Vaccine Institute, Duke University, Durham, North Carolina, USA
12Department of Cell Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
13Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, USA

Tóm tắt

Abstract Background Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) viral RNA (vRNA) is detected in the bloodstream of some patients with coronavirus disease 2019 (COVID-19), but it is not clear whether this RNAemia reflects viremia (ie, virus particles) and how it relates to host immune responses and outcomes. Methods SARS-CoV-2 vRNA was quantified in plasma samples from observational cohorts of 51 COVID-19 patients including 9 outpatients, 19 hospitalized (non–intensive care unit [ICU]), and 23 ICU patients. vRNA levels were compared with cross-sectional indices of COVID-19 severity and prospective clinical outcomes. We used multiple imaging methods to visualize virions in plasma. Results SARS-CoV-2 vRNA was detected in plasma of 100%, 52.6%, and 11.1% of ICU, non-ICU, and outpatients, respectively. Virions were detected in plasma pellets using electron tomography and immunostaining. Plasma vRNA levels were significantly higher in ICU > non-ICU > outpatients (P < .0001); for inpatients, plasma vRNA levels were strongly associated with higher World Health Organization (WHO) score at admission (P = .01), maximum WHO score (P = .002), and discharge disposition (P = .004). A plasma vRNA level >6000 copies/mL was strongly associated with mortality (hazard ratio, 10.7). Levels of vRNA were significantly associated with several inflammatory biomarkers (P < .01) but not with plasma neutralizing antibody titers (P = .8). Conclusions Visualization of virus particles in plasma indicates that SARS-CoV-2 RNAemia is due, at least in part, to viremia. The levels of SARS-CoV-2 RNAemia correlate strongly with disease severity, patient outcome, and specific inflammatory biomarkers but not with neutralizing antibody titers.

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