Emerging Infectious Diseases (Nov 2009)

Serologic Analysis of Returned Travelers with Fever, Sweden

  • Helena H. Askling,
  • Birgitta Lesko,
  • Sirkka Vene,
  • Angerd Berndtson,
  • Per Björkman,
  • Jonas Bläckberg,
  • Ulf Bronner,
  • Per Follin,
  • Urban Hellgren,
  • Maria Palmerus,
  • Karl Ekdahl,
  • Anders Tegnell,
  • Johan Struwe

DOI
https://doi.org/10.3201/eid1511.091157
Journal volume & issue
Vol. 15, no. 11
pp. 1805 – 1808

Abstract

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We studied 1,432 febrile travelers from Sweden who had returned from malaria-endemic areas during March 2005–March 2008. In 383 patients, paired serum samples were blindly analyzed for influenza and 7 other agents. For 21% of 115 patients with fever of unknown origin, serologic analysis showed that influenza was the major cause.

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