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Volume 17, Number 6—June 2011
Letter

Swine Influenza Virus A (H3N2) Infection in Human, Kansas, USA, 2009

Chad M. CoxComments to Author , Daniel Neises, Rebecca J. Garten, Bill Bryant, Richard A. Hesse, Gary A. Anderson, Ingrid Trevino-Garrison, Bo Shu, Stephen Lindstrom, Alexander I. Klimov, and Lyn Finelli
Author affiliations: Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (C.M. Cox, R.J. Garten, B. Shu, S. Lindstrom, A.I. Klimov, L. Finelli); Kansas Department of Health and Environment, Topeka, Kansas, USA (D. Neises, I. Trevino-Garrison); Kansas Animal Health Department, Topeka (B. Bryant); Kansas State Veterinary Diagnostic Laboratory, Manhattan, Kansas, USA (R.A. Hesse, G.A. Anderson)

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Table

Hemagglutination inhibition assay titers for 3 influenza strains from swine exhibited at county fair, by date of blood draw, Kansas, 2009*

Swine ID no. August 7 titers
 August 31 titers
Subtype H1N1† Subtype H3N2‡ “County fair,” subtype H3N2§ Subtype H3N2‡ “County fair,” subtype H3N2§
1 <10 20 320
2 <10 10 160
3 <10 40 640
4 <10 40 640
5 <10 80 640
6 <10 40 640
7 <10 320 640
8 10 10 160
9 <10 80 640
10 <10 40 320 <10 80
11 <10 80 320 10 320
12 <10 20 160 20 80
13 10 <10 40

*HI, hemagglutination inhibition; ID, identification.
†Strain A/Swine/Iowa/79 (H1N1).
‡Strain A/Swine/Texas/98 (H3N2).
§Strain A/Kansas/13/2009 (H3N2).
¶Ten of the original 13 swine were slaughtered before convalescent-phase serum could be collected.

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Page created: August 03, 2011
Page updated: August 03, 2011
Page reviewed: August 03, 2011
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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