Comparison of pandemic (H1N1) 2009 and seasonal influenza viral loads, Singapore

Emerg Infect Dis. 2011 Feb;17(2):287-91. doi: 10.3201/eid1702.100282.

Abstract

Mean viral loads for patients with pandemic (H1N1) 2009 were ≈1 log₁₀ times lower than those for patients with seasonal influenza within the first week after symptom onset. Neither pandemic nor seasonal influenza viral loads correlated with clinical severity of illness. No correlation was found between viral loads and concurrent illness.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Child
  • Child, Preschool
  • Disease Outbreaks
  • Female
  • Humans
  • Infant
  • Infant, Newborn
  • Influenza A Virus, H1N1 Subtype / isolation & purification
  • Influenza A Virus, H1N1 Subtype / pathogenicity
  • Influenza A Virus, H1N1 Subtype / physiology*
  • Influenza, Human / epidemiology*
  • Influenza, Human / physiopathology
  • Influenza, Human / virology
  • Male
  • Middle Aged
  • Pandemics*
  • RNA, Viral / blood
  • Seasons*
  • Severity of Illness Index
  • Singapore / epidemiology
  • Viral Load*
  • Young Adult

Substances

  • RNA, Viral