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Volume 21, Number 10—October 2015
Dispatch

Influenza Virus Surveillance in Coordinated Swine Production Systems, United States

Bryan Kaplan, Jennifer DeBeauchamp, Evelyn Stigger-Rosser, John Franks, Jeri Carol Crumpton, Jasmine Turner, Daniel Darnell, Trushar Jeevan, Myoung-don Oh, Abbey Harding, Richard Webby, and James F. LoweComments to Author 
Author affiliations: St. Jude Children’s Research Hospital, Memphis, Tennessee, USA (B.S. Kaplan, J. DeBeauchamp, E. Stigger-Rosser, J. Franks, J.C. Crumpton, J. Turner, D. Darnell, T. Jeevan, G. Kayali, R.J. Webby); Lowe Consulting Ltd., Albers, Illinois, USA (A. Harding, J.F. Lowe); University of Illinois College of Veterinary Medicine, Urbana, Illinois, USA (J.F. Lowe).

Main Article

Table 2

Correlation between age, state, farm type or production system, and influenza A virus status in swine in coordinated production systems, United States, September 2012–September 2013*

Factor aOR (95% CI) p value
Age group
Piglet vs. gilt
1.3 (1.1–1.6)
 0.004
State
Illinois vs. Oklahoma
 1.9 (1.4–2.6)
 <0.001
Farm type
MF piglets vs. BTW 0.7 (0.5–0.9) 0.011
GDU vs. BTW
 1.6 (1.2–2.1)
 <0.001
System number
2 vs. 1 1.7 (1.3–2.3) <0.001

*Only statistically significant factors are shown; full analysis is provided in the Technical Appendix. aOR, adjusted odds ratio; CI, confidence interval; MF, multiplier farm; GDU, gilt development unit; BTW, breed-to-wean.

Main Article

Page created: September 23, 2015
Page updated: September 23, 2015
Page reviewed: September 23, 2015
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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