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Volume 19, Number 6—June 2013
Research

Effect of Travel on Influenza Epidemiology

Sanne-Meike BelderokComments to Author , Guus F. Rimmelzwaan, Anneke van den Hoek, and Gerard J.B. Sonder
Author affiliations: Public Health Service, Amsterdam, the Netherlands (S.-M. Belderok, A. van den Hoek, G.J.B. Sonder); Academic Medical Centre, Amsterdam (S.-M. Belderok, A. van den Hoek, G.J.B. Sonder); Erasmus Medical Center, Rotterdam, the Netherlands (G.F. Rimmelzwaan); National Coordination Centre for Traveler’s Health Advice, Amsterdam (G.J.B. Sonder)

Main Article

Table 2

Increase in titer and symptoms of influenza-like illness in 1,190 travelers from the Netherlands to (sub)tropical countries, October 2006–October 2007

Strain, subtype, pretravel titer No. travelers, n = 1,190 Titer >4-fold, no. (%), n = 120* Influenza-like illness, no. (%), n = 11
A
  H3N2
    <40 557 32 (6) 6 (19)
    >40† 633 12 (2) 1 (8)‡
  H1N1
    <40 862 24 (3) 1 (4)
    >40†
 328
 5 (2)
 0
B/Malaysia
    <40 883 20 (2) 2 (10)
    >40†
 307
 3 (1)
 0
B/Florida
    <40 820 22 (3) 1 (5)
    >40† 370 2 (1) 0

*>4-fold rise between pretravel and posttravel titer and posttravel titer >40.
†>40: protective antibodies.
‡Symptoms probably caused by asthma.

Main Article

Page created: May 09, 2013
Page updated: May 09, 2013
Page reviewed: May 09, 2013
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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