Spatial patterns of pathogen prevalence in questing Ixodes ricinus nymphs in southern Scandinavia, 2016
| العنوان: | Spatial patterns of pathogen prevalence in questing Ixodes ricinus nymphs in southern Scandinavia, 2016 |
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| المؤلفون: | Åshild Kristine Andreassen, Madeleine Christensson, Petter Kjellander, Malin Teräväinen, Katrine Mørk Paulsen, Laura Mark Jensen, Vivian Kjelland, Snorre Stuen, Lars Korslund, Rene Bødker, Heidi Elisabeth Heggen Lindstedt, Lene Jung Kjær, Kirstine Klitgaard, Andreas Baum, Kristin Skarsfjord Edgar, Arnulf Soleng, Audun Slettan |
| المصدر: | Scientific Reports Kjær, L J, Klitgaard, K, Soleng, A, Edgar, K S, Lindstedt, H E H, Paulsen, K M, Andreassen, Å K, Korslund, L, Kjelland, V, Slettan, A, Stuen, S, Kjellander, P, Christensson, M, Teräväinen, M, Baum, A, Jensen, L M & Bødker, R 2020, ' Spatial patterns of pathogen prevalence in questing Ixodes ricinus nymphs in southern Scandinavia, 2016 ', Scientific Reports, vol. 10, no. 1, 19376 . https://doi.org/10.1038/s41598-020-76334-5 Scientific Reports, Vol 10, Iss 1, Pp 1-14 (2020) |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0301 basic medicine, Ixodes ricinus, 030231 tropical medicine, Zoology, lcsh:Medicine, Tick, Scandinavian and Nordic Countries, medicine.disease_cause, Borrelia afzelii, Models, Biological, Article, 03 medical and health sciences, 0302 clinical medicine, parasitic diseases, Machine learning, medicine, Prevalence, Animals, Humans, Nymph, lcsh:Science, Pathogen, Ecological epidemiology, Multidisciplinary, Ecology, biology, Ixodes, lcsh:R, High-throughput screening, biology.organism_classification, bacterial infections and mycoses, Anaplasma phagocytophilum, Tick Infestations, Computational biology and bioinformatics, 030104 developmental biology, Rickettsia helvetica, Tick-Borne Diseases, Spatial ecology, lcsh:Q, Microbiology techniques |
| الوصف: | Tick-borne pathogens cause diseases in animals and humans, and tick-borne disease incidence is increasing in many parts of the world. There is a need to assess the distribution of tick-borne pathogens and identify potential risk areas. We collected 29,440 tick nymphs from 50 sites in Scandinavia from August to September, 2016. We tested ticks in a real-time PCR chip, screening for 19 vector-associated pathogens. We analysed spatial patterns, mapped the prevalence of each pathogen and used machine learning algorithms and environmental variables to develop predictive prevalence models. All 50 sites had a pool prevalence of at least 33% for one or more pathogens, the most prevalent being Borrelia afzelii, B. garinii, Rickettsia helvetica, Anaplasma phagocytophilum, and Neoehrlichia mikurensis. There were large differences in pathogen prevalence between sites, but we identified only limited geographical clustering. The prevalence models performed poorly, with only models for R. helvetica and N. mikurensis having moderate predictive power (normalized RMSE from 0.74–0.75, R2 from 0.43–0.48). The poor performance of the majority of our prevalence models suggest that the used environmental and climatic variables alone do not explain pathogen prevalence patterns in Scandinavia, although previously the same variables successfully predicted spatial patterns of ticks in the same area. Tick-borne pathogens cause diseases in animals and humans, and tick-borne disease incidence is increasing in many parts of the world. There is a need to assess the distribution of tick-borne pathogens and identify potential risk areas. We collected 29,440 tick nymphs from 50 sites in Scandinavia from August to September, 2016. We tested ticks in a real-time PCR chip, screening for 19 vector-associated pathogens. We analysed spatial patterns, mapped the prevalence of each pathogen and used machine learning algorithms and environmental variables to develop predictive prevalence models. All 50 sites had a pool prevalence of at least 33% for one or more pathogens, the most prevalent being Borrelia afzelii, B. garinii, Rickettsia helvetica, Anaplasma phagocytophilum, and Neoehrlichia mikurensis. There were large differences in pathogen prevalence between sites, but we identified only limited geographical clustering. The prevalence models performed poorly, with only models for R. helvetica and N. mikurensis having moderate predictive power (normalized RMSE from 0.74–0.75, R2 from 0.43–0.48). The poor performance of the majority of our prevalence models suggest that the used environmental and climatic variables alone do not explain pathogen prevalence patterns in Scandinavia, although previously the same variables successfully predicted spatial patterns of ticks in the same area. |
| وصف الملف: | application/pdf |
| تدمد: | 2045-2322 |
| DOI: | 10.1038/s41598-020-76334-5 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::599e9f1b69eaf09ccb3e9a851d919d6c https://pubmed.ncbi.nlm.nih.gov/33168841 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....599e9f1b69eaf09ccb3e9a851d919d6c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20452322 |
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| DOI: | 10.1038/s41598-020-76334-5 |