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Travel and Age of Influenza A (H1N1) 2009 Virus Infection

  1. Hiroshi Nishiura MD, PhD1,2,*

Article first published online: 1 JUL 2010

DOI: 10.1111/j.1708-8305.2010.00418.x

Issue

Journal of Travel Medicine

Journal of Travel Medicine

Volume 17, Issue 4, pages 269–270, July/August 2010

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How to Cite

Nishiura, H. (2010), Travel and Age of Influenza A (H1N1) 2009 Virus Infection. Journal of Travel Medicine, 17: 269–270. doi: 10.1111/j.1708-8305.2010.00418.x

Author Information

  1. 1

    PRESTO, Japan Science and Technology Agency, Saitama, Japan

  2. 2

    Theoretical Epidemiology, University of Utrecht, Utrecht, The Netherlands

*Hiroshi Nishiura, MD, PhD, University of Utrecht, Yalelaan 7, 3584 CL Utrecht, The Netherlands. E-mail: h.nishiura@uu.nl

Publication History

  1. Issue published online: 1 JUL 2010
  2. Article first published online: 1 JUL 2010

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Age distribution of 4,986 cases of influenza A (H1N1) 2009 in Japan was analyzed. Cases with a travel history within 10 days preceding the illness onset were significantly older than indigenous cases (p < 0.01) reflecting age-specific travel patterns. Border controls should account for the high frequency of infection among adults.

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