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Urbanization and the dynamics of RNA viruses in Mallards (Anas platyrhynchos).
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Biochemistry and Microbiology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Infectious Diseases.
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2017 (English)In: Infection, Genetics and Evolution, ISSN 1567-1348, E-ISSN 1567-7257, Vol. 51, 89-97 p., S1567-1348(17)30102-8Article in journal (Refereed) Published
Abstract [en]

Urbanization is intensifying worldwide, and affects the epidemiology of infectious diseases. However, the effect of urbanization on natural host-pathogen systems remains poorly understood. Urban ducks occupy an interesting niche in that they directly interact with both humans and wild migratory birds, and either directly or indirectly with food production birds. Here we have collected samples from Mallards (Anas platyrhynchos) residing in a pond in central Uppsala, Sweden, from January 2013 to January 2014. This artificial pond is kept ice-free during the winter months, and is a popular location where the ducks are fed, resulting in a resident population of ducks year-round. Nine hundred and seventy seven (977) fecal samples were screened for RNA viruses including: influenza A virus (IAV), avian paramyxovirus 1, avian coronavirus (CoV), and avian astrovirus (AstroV). This intra-annual dataset illustrates that these RNA viruses exhibit similar annual patterns to IAV, suggesting similar ecological factors are at play. Furthermore, in comparison to wild ducks, autumnal prevalence of IAV and CoV are lower in this urban population. We also demonstrate that AstroV might be a larger burden to urban ducks than IAV, and should be better assessed to demonstrate the degree to which wild birds contribute to the epidemiology of these viruses. The presence of economically relevant viruses in urban Mallards highlights the importance of elucidating the ecology of wildlife pathogens in urban environments, which will become increasingly important for managing disease risks to wildlife, food production animals, and humans.

Place, publisher, year, edition, pages
2017. Vol. 51, 89-97 p., S1567-1348(17)30102-8
Keyword [en]
Astrovirus, Coronavirus, Disease dynamics, Influenza A virus, Paramyxovirus, Urbanization
National Category
Infectious Medicine
Identifiers
URN: urn:nbn:se:uu:diva-330832DOI: 10.1016/j.meegid.2017.03.019PubMedID: 28323070OAI: oai:DiVA.org:uu-330832DiVA: diva2:1147108
Available from: 2017-10-04 Created: 2017-10-04 Last updated: 2017-10-04

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