title: Multiyear surveillance for avian influenza virus in waterfowl from wintering grounds, Texas coast, USA.
abstract: We studied the prevalence of influenza A virus in wintering waterfowl from the Central Flyway on the Gulf Coast of Texas. Of 5,363 hunter-harvested migratory and resident waterfowl and wetland-associated game birds sampled during 3 consecutive hunting seasons (September-January 2006-07, 2007-08, and 2008-09), real-time reverse transcription-PCR detected influenza A matrix sequences in 8.5% of samples, H5 in 0.7%, and H7 in 0.6%. Virus isolation yielded 134 influenza A viruses, including N1-N9, H1-H7, H10, and H11 subtypes. Low-pathogenicity H7 subtype was isolated during January, September, and November 2007 and January 2008; low-pathogenicity H5 subtype was isolated during November and December 2007.
authors.affiliation: Texas A&M University, College Station, Texas, USA.
authors.forename: Pamela J
authors.initials: PJ
authors.lastname: Ferro
authors.forename: Christine M
authors.initials: CM
authors.lastname: Budke
authors.forename: Markus J
authors.initials: MJ
authors.lastname: Peterson
authors.forename: Dayna
authors.initials: D
authors.lastname: Cox
authors.forename: Emily
authors.initials: E
authors.lastname: Roltsch
authors.forename: Todd
authors.initials: T
authors.lastname: Merendino
authors.forename: Matt
authors.initials: M
authors.lastname: Nelson
authors.forename: Blanca
authors.initials: B
authors.lastname: Lupiani
mesh_terms: D000818:Animals; D046090:Anseriformes; D001715:Bird Diseases / Q000453:epidemiology / Q000821:virology*; D016009:Chi-Square Distribution; D004197:Disease Reservoirs / Q000662:veterinary* / Q000821:virology; D005260:Female; D009980:Influenza A virus / Q000235:genetics / Q000302:isolation & purification*; D005585:Influenza in Birds / Q000453:epidemiology / Q000821:virology*; D008297:Male; D015995:Prevalence; D012367:RNA, Viral / Q000737:chemistry / Q000235:genetics; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000662:veterinary; D012621:Seasons; D012703:Serotyping / Q000662:veterinary; D013781:Texas / Q000453:epidemiology
chemical_list: D012367:RNA, Viral