title: Bait trapping linked to higher avian influenza virus detection in wild ducks.
abstract: In 2007, we assessed whether trapping method influenced apparent prevalence of low pathogenic avian influenza viruses (AIV) in wild ducks sampled during Canada's Inter-agency Wild Bird Influenza Survey. Combined cloacal and oropharyngeal swabs were collected from 514 ducks captured by bait trapping (356) and netting from airboats (158), and tested by real-time reverse transcriptase polymerase chain reaction for influenza type A viruses. When controlling for species and capture site, ducks caught in bait traps were 2.6 times more likely to test positive for AIV compared with those netted from airboats (95% CI=1.2-6.0). If bait trapping increases AIV transmission among artificially aggregated ducks, this could have important implications for interpretation of disease surveillance results and waterfowl management programs.
authors.affiliation: Science and Technology Branch, Environment Canada, 115 Perimeter Rd, Saskatoon, Saskatchewan S7N 0X4, Canada. catherine.soos@ec.gc.ca
authors.forename: Catherine
authors.initials: C
authors.lastname: Soos
authors.forename: E Jane
authors.initials: EJ
authors.lastname: Parmley
authors.forename: Keith
authors.initials: K
authors.lastname: McAloney
authors.forename: Bruce
authors.initials: B
authors.lastname: Pollard
authors.forename: Emily
authors.initials: E
authors.lastname: Jenkins
authors.forename: Fred
authors.initials: F
authors.lastname: Kibenge
authors.forename: Frederick A
authors.initials: FA
authors.lastname: Leighton
mesh_terms: D000818:Animals; D000835:Animals, Wild / Q000821:virology; D002988:Cloaca / Q000821:virology; D004372:Ducks / Q000821:virology; D005260:Female; D009980:Influenza A virus / Q000302:isolation & purification* / Q000472:pathogenicity; D005585:Influenza in Birds / Q000453:epidemiology* / Q000821:virology; D008297:Male; D020133:Reverse Transcriptase Polymerase Chain Reaction / Q000662:veterinary; D018571:Sentinel Surveillance / Q000662:veterinary*; D013048:Specimen Handling / Q000009:adverse effects / Q000379:methods / Q000662:veterinary*