Infected or not: are PCR-positive oropharyngeal swabs indicative of low pathogenic influenza A virus infection in the respiratory tract of Mallard Anas platyrhynchos?
2014 (English)In: Veterinary research (Print), ISSN 0928-4249, E-ISSN 1297-9716, Vol. 45, Article ID: 53- p.Article in journal (Refereed) Published
Detection of influenza virus in oropharyngeal swabs collected during wild bird surveillance is assumed to representrespiratory infection, although intestine is the main site of infection. We tested this assumption by histologicalexamination of the respiratory tract of wild Mallards with virus-positive oropharyngeal swabs. Thirty-two of 125Mallards tested had viral-RNA positive oropharyngeal swabs. The respiratory tracts of four Mallards with the mostvirus were examined in detail by immunohistochemistry. None had detectable virus antigen in the respiratory tract,suggesting it was not infected. An alternative explanation is that the oropharynx was contaminated with virusthrough feeding in surface water or through preening.
Place, publisher, year, edition, pages
2014. Vol. 45, Article ID: 53- p.
Research subject Natural Science, Zoonotic Ecology
IdentifiersURN: urn:nbn:se:lnu:diva-34673DOI: 10.1186/1297-9716-45-53ISI: 000336928100001OAI: oai:DiVA.org:lnu-34673DiVA: diva2:721672