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 Lupiani
Table 2
Subtypes of avian influenza viruses isolated in the winter (December–January) from selected species during 3 consecutive hunting seasons, Texas mid–Gulf Coast, USA, 2006–07, 2007–08, and 2008–
| Species* | Subtype (no. isolated) |
||||||
|---|---|---|---|---|---|---|---|
| December |
January |
||||||
| 2006 | 2007 | 2008 | 2007 | 2008 | 2009 | ||
| Northern pintail (Anas acuta) | – | H10N3/7 | H4N6 | – | H10N3 | – | |
| Northern shoveler (A. clypeata) | – | H5N2, H6N2, H10N7 | – | – | – | – | |
| Teal, blue-winged (A. discors) | – | – | – | – | H10N3 (3) | – | |
| Teal, green-winged (A. crecca) | H10N7, H11N3 | – | – | H7N3 | H7N3, H10N3 (2) | – | |
*Species selected by significance as determined by prevalence, uniqueness to the area, or native, nonmigratory species.
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