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Volume 13, Number 12—December 2007

Research

Swine Influenza (H3N2) Infection in a Child and Possible Community Transmission, Canada

Joan L. Robinson*†Comments to Author , Bonita E. Lee*, Jagdish Patel‡, Nathalie Bastien§, Karen Grimsrud¶, Robert F. Seal†, Robin King‡, Frank Marshall#, and Yan Li†§
Author affiliations: *Public Health and Provincial Laboratory (Microbiology), Edmonton, Alberta, Canada; †University of Alberta, Edmonton, Alberta, Canada; ‡Alberta Agriculture and Food, Edmonton, Alberta, Canada; §National Medical Laboratory, Winnipeg, Manitoba, Canada; ¶Alberta Health and Wellness, Edmonton, Alberta, Canada; #Marshall Swine Health Service, Camrose, Alberta, Canada;

Main Article

Table 2

Clinical features and hemagglutination-inhibition reaction of positive antiserum from 9 members of 3 different households of a communal farm with recently circulating swine influenza (H3N2) virus A/Canada/1158/2006*

Household Age, y Sex A/Wisconsin/ 67/2005 titer A/New Caledonia/ 20/99 titer A/Canada/ 1158/2006 titer Swine exposure Clinical features
A (index patient) 0.6 M <4 <4 256 None Hospitalization with ILI and isolation of swine influenza
A† 1 M <4 <4 256 None None (URI coincident with ILI in index case)
A 35 F <4 <4 32 None None
A 38 M 8 <4 32 <1 h/wk None
A 8 M <4 <4 64 <1 h/week None
B 7 M 32 <4 32 <1 h/wk None
C 8 M 4 <4 64 >1 h/week None
C 5 M <4 <4 128 <1 h/week none
C 3 F <4 <4 128 None ILI 1 mo before index case

*URI, upper respiratory illness; ILI, influenza-like illness.
†Symptomatic sibling.

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