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Influenza A(H1N1)pdm09 during air travel.

Abstract
The global spread of the influenza A(H1N1)pdm09 virus (pH1N1) associated with travelers from North America during the onset of the 2009 pandemic demonstrates the central role of international air travel in virus migration. To characterize risk factors for pH1N1 transmission during air travel, we investigated travelers and airline employees from four North American flights carrying ill travelers with confirmed pH1N1 infection. Of 392 passengers and crew identified, information was available for 290 (74%) passengers were interviewed. Overall attack rates for acute respiratory infection and influenza-like illness 1-7 days after travel were 5.2% and 2.4% respectively. Of 43 individuals that provided sera, 4 (9.3%) tested positive for pH1N1 antibodies, including 3 with serologic evidence of asymptomatic infection. Investigation of novel influenza aboard aircraft may be instructive. However, beyond the initial outbreak phase, it may compete with community-based mitigation activities, and interpretation of findings will be difficult in the context of established community transmission.
AuthorsJohn Neatherlin, Elaine H Cramer, Christine Dubray, Karen J Marienau, Michelle Russell, Hong Sun, Melissa Whaley, Kathy Hancock, Krista K Duong, Hannah L Kirking, Christopher Schembri, Jacqueline M Katz, Nicole J Cohen, Daniel B Fishbein
JournalTravel medicine and infectious disease (Travel Med Infect Dis) 2013 Mar-Apr Vol. 11 Issue 2 Pg. 110-8 ISSN: 1873-0442 [Electronic] Netherlands
PMID23523241 (Publication Type: Journal Article)
CopyrightPublished by Elsevier Ltd.
Topics
  • Adolescent
  • Adult
  • Aged
  • Aged, 80 and over
  • Air Travel (statistics & numerical data)
  • Aircraft
  • Child
  • Child, Preschool
  • Contact Tracing
  • Female
  • Humans
  • Influenza A Virus, H1N1 Subtype (genetics, isolation & purification)
  • Influenza, Human (epidemiology, transmission, virology)
  • Male
  • Middle Aged
  • Pandemics
  • United States

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