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Volume 16, Number 8—August 2010

Research

Multiyear Surveillance for Avian Influenza Virus in Waterfowl from Wintering Grounds, Texas Coast, USA

Pamela J. Ferro, Christine M. Budke, Markus J. Peterson, Dayna Cox, Emily Roltsch, Todd Merendino1, Matt Nelson, and Blanca LupianiComments to Author 
Author affiliations: Texas A&M University, College Station, Texas, USA (P.J. Ferro, C.M. Budke, M.J. Peterson, D. Cox, E. Roltsch, B. Lupiani); Texas Parks and Wildlife Department, Bay City, Texas, USA (T. Merendino, M. Nelson); 1Current affiliation: Ducks Unlimited, Texas Gulf Coast, Richmond, Texas, USA.

Main Article

Table 4

Multivariate logistic regression model to identify variables associated with a positive real-time RT-PCR result, Texas mid–Gulf Coast, USA, 2006–07, 2007–08, and 2008–09*

Variable Odds ratio (95% CI) p value
Sex
Drake 1.0†
Hen
1.07 (0.859–1.320)
0.558
Age
Adult 1.0
Juvenile
1.45 (1.17–1.81)
0.001
Species
Other species 1.0
Gadwall 0.407 (0.120–0.825) 0.013
Northern shoveler 1.51 (0.987–2.320) 0.057
Blue-winged teal 2.18 (1.52–3.13) <0.001
  Green-winged teal 1.12 (0.742–1.680) 0.592

*Results for a total of 4,187 samples, collected during September–January for each season. RT-PCR, reverse transcription–PCR; CI, confidence interval. Boldface indicates significant result.
†Reference category.

Main Article

1Current affiliation: Ducks Unlimited, Texas Gulf Coast, Richmond, Texas, USA.

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