Active Surveillance for Influenza A Virus among Swine, Midwestern United States, 2009–2011
Cesar A. Corzo, Marie Culhane

, Kevin Juleen, Evelyn Stigger-Rosser, Mariette F. Ducatez, Richard J. Webby, and James F. Lowe
Author affiliations: University of Minnesota, Saint Paul, Minnesota, USA (C.A. Corzo, M. Culhane, K. Juleen); St. Jude Children’s Research Hospital, Memphis, Tennessee, USA (E. Stigger-Rosser, M.F. Ducatez, R.J. Webby); Carthage Veterinary Services, Carthage, Illinois, USA (J.F. Lowe)
Main Article
Table 1
Influenza virus status and respiratory clinical signs among growing pigs, midwestern United States, June 2009–December 2011
Clinical signs |
Influenza virus status, no. groups
|
Total, no. groups |
Positive |
Negative |
Present |
43 |
144 |
187 |
Absent |
74 |
279 |
353 |
Total |
117 |
423 |
540 |
Main Article
Page created: May 20, 2013
Page updated: May 20, 2013
Page reviewed: May 20, 2013
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