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;Authors:[[Has first author::Timothy M. Uyeki]]{{Link to affiliation|l1=1}}, [[Has author::Suzanne B. Zane]], [[Has author::Ulana R. Bodnar]], [[Has author::Katherine L. Fielding]], [[Has author::Jane A. Buxton]], [[Has author::Joy M. Miller]], [[Has author::Michael Beller]], [[Has author::Jay C. Butler]], [[Has author::Keiji Fukuda]], [[Has author::Susan A. Maloney]], [[Has author::Martin S. Cetron]]
;Affiliations:
* {{Affiliation anchor|l=1}} Influenza Branch, Division of Viral and Rickettsial Diseases, National Center for Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia 30333, USA. tmu0@cdc.gov
;In:[[Is in journal::Clinical infectious diseases : an official publication of the Infectious Diseases Society of America (journal)|Clinical infectious diseases : an official publication of the Infectious Diseases Society of America]], ([[Publishing date::2003]])
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==Abstract==
{{Begin article body}}
We investigated a large summertime outbreak of acute respiratory illness during May-September 1998 in Alaska and the Yukon Territory, Canada. Surveillance for acute respiratory illness (ARI), influenza-like illness (ILI), and pneumonia conducted at 31 hospital, clinic, and cruise ship infirmary sites identified 5361 cases of ARI (including 2864 cases of ILI [53%] and 171 cases of pneumonia [3.2%]) occurring primarily in tourists and tourism workers (from 18 and 37 countries, respectively). Influenza A viruses were isolated from 41 of 210 patients with ILI at 8 of 14 land sites and 8 of 17 cruise ship infirmaries. Twenty-two influenza isolates were antigenically characterized, and all were influenza A/Sydney/05/97-like (H3N2) viruses. No other predominant pathogens were identified. We estimated that &gt;33,000 cases of ARI might have occurred during this protracted outbreak, which was attributed primarily to influenza A/Sydney/05/97-like (H3N2) viruses. Modern travel patterns may facilitate similar outbreaks, indicating the need for increased awareness about influenza by health care providers and travelers and the desirability of year-round influenza surveillance in some regions.
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==See also==
;External links:
* [https://pubmed.ncbi.nlm.nih.gov/12715302/ Link toward PubMed]
[[Category:Adolescent (MeSH)]]
[[Category:Adult (MeSH)]]
[[Category:Aged (MeSH)]]
[[Category:Aged, 80 and over (MeSH)]]
[[Category:Alaska (epidemiology)]]
[[Category:Child (MeSH)]]
[[Category:Child, Preschool (MeSH)]]
[[Category:Disease Outbreaks (MeSH)]]
[[Category:Humans (MeSH)]]
[[Category:Infant (MeSH)]]
[[Category:Influenza A virus (isolation &amp; purification)]]
[[Category:Influenza, Human (epidemiology)]]
[[Category:Middle Aged (MeSH)]]
[[Category:Prospective Studies (MeSH)]]
[[Category:Retrospective Studies (MeSH)]]
[[Category:Travel (MeSH)]]
[[Category:Yukon Territory (epidemiology)]]
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