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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 A6

Apparent prevalence of avian influenza virus by age, sex, and detection method in hunter-harvested waterfowl, Texas mid–Gulf Coast, USA, September–January 2006–07, 2007–08, and 2008–09

Age/sex
 Hunting season
 Total, 2006–09
2006–07
2007–08
2008–09
No. tested
 Real-time RT-PCR*
 VI†
 No. tested
 Real-time RT-PCR*
 VI
 No. tested
 Real-time RT-PCR*
 VI
 No. tested
 Real-time RT-PCR*
 VI
Adult
Hen 483 34 (7.0) 5 (1.0) 468 55 (11.8) 20 (4.3) 259 10 (3.9) 1 (0.4) 1,210 99 (8.2) 26 (2.2)
Drake 580 24 (4.1) 3 (0.5) 704 69 (9.8) 19 (2.7) 221 13 (5.9) 0 1,505 106 (7.0) 22 (1.5)
Total 1,063 58 (5.5) 8 (0.8) 1,172 124 (10.6) 39 (3.3) 480 23 (4.8) 1 (0.2) 2,715 205 (7.6) 48 (1.8)
p value
 –
 0.038
 0.33
–
 0.288
 0.141
–
 0.301
 0.355
 –
 0.264
 0.177
Juvenile
Hen 250 15 (6.0) 5 (2.0) 409 60 (14.7) 20 (4.9) 136 10 (7.4) 0 795 85 (10.7) 25 (3.1)
Drake 254 27 (10.7) 12 (4.7) 344 45 (13.1) 20 (5.8) 80 9 (11.3) 4 (5.0) 678 81 (12.0) 36 (5.3)
Total 504 42 (8.3) 17 (3.4) 753 105 (13.9) 40 (5.3) 216 19 (8.8) 4 (1.9) 1,473 166 (11.3) 61 (4.1)
p value – 0.060 0.090 – 0.531 0.573 – 0.329 0.008 – 0.448 0.038

*RT-PCR, reverse transcription–PCR. No. positive (apparent prevalence, %).
†VI, virus isolation. No. positive (apparent prevalence, %). Boldface indicates significance.

Main Article

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

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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