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Oxford University Press (OUP), The Journal of Infectious Diseases, 12(206), p. 1872-1877

DOI: 10.1093/infdis/jis610

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Influenza Viral RNA Detection in Blood as a Marker to Predict Disease Severity in Hematopoietic Cell Transplant Recipients

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Influenza RNA in blood (viremia) was detected in 9 of 79 (11.4%) hematopoietic cell transplant recipients with influenza, and was less frequently observed in patients with upper respiratory tract disease only and more frequently in patients infected with 2009 pandemic influenza A/H1N1 strain (versus seasonal strains). Viremia increased the risk of progression to lower respiratory tract disease (LRD), hypoxemia, respiratory failure, and overall and influenza-related death. Among patients with LRD, viremia was associated with increased hazards of overall and influenza-associated death (hazard ratio 3.5, 1.1–12). Thus, influenza viremia may serve as marker for overall poor outcome.