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- Huang, YanyanMem Univ Newfoundland, Canada (author)
A 4-year study of avian influenza virus prevalence and subtype diversity in ducks of Newfoundland, Canada.
- Article/chapterEnglish2013
Publisher, publication year, extent ...
- Canadian Science Publishing,2013
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:lnu-32949
- https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-32949URI
- https://doi.org/10.1139/cjm-2013-0507DOI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- The island of Newfoundland, Canada, is at the eastern edge of North America and has migratory bird connections with the continental mainland as well as across the North Atlantic Ocean. Here, we report a 4-year avian influenza virus (AIV) epidemiological study in ducks in the St. John's region of Newfoundland. The overall prevalence of AIV detection in ducks during this study was 7.2%, with American Black Ducks contributing the vast majority of the collected samples and the AIV positives. The juvenile ducks showed a significantly higher AIV detection rate (10.6%) compared with adults (3.4%). Seasonally, AIV prevalence rates were higher in the autumn (8.4%), but positives were still detected in the winter (4.6%). Preliminary serology tests showed a high incidence of previous AIV infection (20/38, 52.6%). A total of 43 viruses were characterized for their HA-NA or HA subtypes, which revealed a large diversity of AIV subtypes and little recurrence of subtypes from year to year. Investigation of the movement patterns of ducks in this region showed that it is a largely non-migratory duck population, which may contribute to the observed pattern of high AIV subtype turnover. Phylogenetic analysis of 4 H1N1 and one H5N4 AIVs showed these viruses were highly similar to other low pathogenic AIV sequences from waterfowl in North America and assigned all gene segments into American-avian clades. Notably, the H1N1 viruses, which were identified in consecutive years, possessed homologous genomes. Such detection of homologous AIV genomes across years is rare, but indicates the role of the environmental reservoir in viral perpetuation.
Subject headings and genre
- NATURVETENSKAP Biologi Mikrobiologi hsv//swe
- NATURAL SCIENCES Biological Sciences Microbiology hsv//eng
- Mikrobiologi
- Microbiology
Added entries (persons, corporate bodies, meetings, titles ...)
- Wille, MichelleMem Univ Newfoundland, Canada,Zoonotic Ecology and Epidemiology(Swepub:lnu)miwiab (author)
- Dobbin, AshleyMem Univ Newfoundland, Canada (author)
- Robertson, Gregory JEnvironm Canada, Wildlife Res Div, Canada (author)
- Ryan, PierreEnvironm Canada, Canadian Wildlife, Canada (author)
- Ojkic, DavorUniv Guelph, Canada (author)
- Whitney, HughNewfoundland & Labrador Dept Nat Resources, Canada (author)
- Lang, Andrew SMem Univ Newfoundland, Canada (author)
- Mem Univ Newfoundland, CanadaZoonotic Ecology and Epidemiology (creator_code:org_t)
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- In:Canadian journal of microbiology (Print): Canadian Science Publishing59:10, s. 701-7080008-41661480-3275
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