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Forecasting risk of tick-borne encephalitis (TBE): Using data from wildlife and climate to predict next year’s number of human victims
Umeå University, Faculty of Science and Technology, Department of Mathematics and Mathematical Statistics. (Arcum)
Umeå University, Faculty of Science and Technology, Department of Mathematics and Mathematical Statistics.
Linneaus University.
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2011 (English)In: Scandinavian Journal of Infectious Diseases, ISSN 0036-5548, E-ISSN 1651-1980, Vol. 43, 366-372 p.Article in journal (Refereed) Published
Abstract [en]

Background: Over the past quarter century, the incidence of tick-borne encephalitis (TBE) has increased in most European nations. However, the number of humans stricken by the disease varies from year to year. A method for predicting major increases and decreases is needed. Methods: We assembled a 25-y database (1984–2008) of the number of human TBE victims and wildlife and climate data for the Stockholm region of Sweden, and used it to create easy-to-use mathematical models that predict increases and decreases in the number of humans stricken by TBE. Results: Our best model, which uses December precipitation and mink (Neovison vison, formerly Mustela vison) bagging figures, successfully predicted every major increase or decrease in TBE during the past quarter century, with a minimum of false alarms. However, this model was not efficient in predicting small increases and decreases. Conclusions: Predictions from our models can be used to determine when preventive and adaptive programmes should be implemented. For example, in years when the frequency of TBE in humans is predicted to be high, vector control could be intensified where infested ticks have a higher probability of encountering humans, such as at playgrounds, bathing lakes, barbecue areas and camping facilities. Because our models use only wildlife and climate data, they can be used even when the human population is vaccinated. Another advantage is that because our models employ data from previously-established databases, no additional funding for surveillance is required.

Place, publisher, year, edition, pages
Informa Healthcare, 2011. Vol. 43, 366-372 p.
Keyword [en]
TBE, tick-borne encephalitis, tick-borne diseases, prediction, forecasting, early warning
National Category
Infectious Medicine
URN: urn:nbn:se:umu:diva-87975DOI: 10.3109/00365548.2011.552072OAI: diva2:712753
Available from: 2014-04-16 Created: 2014-04-16 Last updated: 2016-05-20Bibliographically approved

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Sjöstedt de Luna, SaraGrafström, AntonOlsen, Björn
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