Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

Volume 19, Number 6—June 2013

Research

Active Surveillance for Influenza A Virus among Swine, Midwestern United States, 2009–2011

Cesar A. Corzo, Marie CulhaneComments to Author , 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 2

Influenza virus status among growing pigs, by season, midwestern United States, June 2009–December 2011

Season Influenza virus status, no. groups
Total, no. groups
Positive Negative
Winter 19 105 124
Spring 37 100 137
Summer 40 110 150
Fall 21 108 129
Total 117 423 540

Main Article

TOP