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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 3

Comparison of apparent prevalence of avian influenza virus in hunter-harvested waterfowl, Texas mid–Gulf Coast, USA, September–January 2006–07, 2007–08, and 2008–09*

Hunting season Juvenile waterfowl†
 Adult waterfowl†
 p value
No. tested rRT-PCR VI No. tested rRT-PCR VI rRT-PCR VI
2006–07 518 8.30
(5.92–10.68) 3.28
(1.75–4.82) 1,081 5.46
(4.10–6.81) 0.74
(0.23–1.25) 0.029 <0.001
2007–08 763 13.80
(11.30–16.20) 5.50 
(3.89–7.12) 1,189 10.51
(8.77–12.20) 3.28
(2.27–4.29) 0.030 0.022
2008–09
 222
 8.56
(4.88–12.24)
 1.80 
(0.49–4.55)
489
 4.70
(2.82–6.58)
 0.20
(0.01–1.13)
0.043
 0.035
Total‡ 1,503 11.10
(9.52–12.69) 4.06 
(3.06–5.06) 2,759 1.74
(1.25–2.23) 1.74
(1.25–2.23) <0.001 <0.001

*rRT-PCR, real-time reverse transcription–PCR; VI, virus isolation.
†Values for rRT-PCR and VI are apparent prevalence, % (95% confidence interval).
‡Total = the 3 hunting seasons combined (September–January, 2006–07, 2007–08, and 2008–09).

Main Article

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

Page created: September 23, 2011
Page updated: September 23, 2011
Page reviewed: September 23, 2011
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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