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Volume 23, Number 9—September 2017


Influenza A(H3N2) Virus in Swine at Agricultural Fairs and Transmission to Humans, Michigan and Ohio, USA, 2016

Andrew S. BowmanComments to Author , Rasna R. Walia, Jacqueline M. Nolting, Amy L. Vincent, Mary Lea Killian, Michele M. Zentkovich, Joshua N. Lorbach, Sarah E. Lauterbach, Tavis K. Anderson, C. Todd Davis, Natosha Zanders, Joyce Jones, Yunho Jang, Brian Lynch, Marisela Rodriguez, Lenee Blanton, Stephen Lindstrom, David Wentworth, John Schiltz, James J. Averill, and Tony Forshey
Author affiliations: The Ohio State University, Columbus, Ohio, USA (A.S. Bowman, J.M. Nolting, M.M. Zentkovich, J.N. Lorbach, S.E. Lauterbach); US Department of Agriculture, Ames, Iowa, USA (R.R. Walia, A.L. Vincent, M.L. Killian, T.K. Anderson, J. Schiltz); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (C.T. Davis, N. Zanders, J. Jones, Y. Jang, B. Lynch, M.R. Rodriguez, L. Blanton, S.E. Lindstrom, D.E. Wentworth); Michigan Department of Agriculture and Rural Development, Lansing, Michigan, USA (J.J. Averill); Ohio Department of Agriculture, Reynoldsburg, Ohio (T. Forshey)

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Table 1

Influenza A virus rRT-PCR and virus isolation test results of samples from active surveillance among swine at agricultural fairs, Michigan and Ohio, USA, 2016*

Fair ILI among swine reported No. swine sampled No. (%) positive
rRT-PCR Isolation
A Yes 20 20 (100) 18 (90)
B No 20 17 (85) 17 (85)
C No 20 20 (100) 18 (90)
D No 20 18 (90) 14 (70)
E Yes 20 20 (100) 18 (90)
F No 20 15 (75) 12 (60)

*Nasal swab or nasal wipe samples were collected from swine at the end of the fair. ILI, influenza-like illness; rRT-PCR, real-time reverse transcription PCR.

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