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WEDNESDAY, Nov. 4, 2020 (HealthDay News) -- For patients admitted to the hospital with COVID-19 pneumonia, high genomic load of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is associated with worse outcomes, according to research published online Oct. 29 in the Annals of the American Thoracic Society.
Ioannis M. Zacharioudakis, M.D., from the NYU School of Medicine in New York City, and colleagues examined the association between SARS-CoV-2 genomic load in nasopharyngeal samples and clinical outcomes among patients admitted to the hospital with COVID-19 pneumonia. The cycle threshold (Ct) value was used as a surrogate for viral load; Ct values were classified into genomic load based on tertiles: low, intermediate, and high.
The final analysis included 314 patients who presented to the emergency department. The researchers found that 34.1, 32.8, and 33.1 percent of patients were categorized into low, intermediate, and high SARS-CoV-2 genomic load categories. In a multivariate analysis, transplant history and duration of symptoms remained significantly associated with high genomic load (odds ratios, 5.36 and 0.93, respectively). Patients with high versus low genomic load had a significantly increased unadjusted risk for death and for reaching the composite outcome of death, intubation, or extracorporeal membrane oxygenation. Genomic load remained an independent risk factor for the composite outcome in the multivariable model (odds ratio, 1.59).
"Our study provides a justification for using patients' SARS-CoV-2 load at the time of hospital admission to assess their risk of adverse outcomes," Zacharioudakis said in a statement.
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Updated on May 25, 2022