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Estimating the annual burden of tick-borne encephalitis to inform vaccination policy, Slovenia, 2009 to 2013
- Mario Fafangel1,2 , Alessandro Cassini3,4 , Edoardo Colzani3,5 , Irena Klavs1 , Marta Grgič Vitek1 , Veronika Učakar1 , Marion Muehlen3 , Marko Vudrag1 , Alenka Kraigher1
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View Affiliations Hide AffiliationsAffiliations: 1 National Institute of Public Health (NIJZ), Ljubljana, Slovenia 2 European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden 3 European Centre for Disease Prevention and Control (ECDC), Stockholm, Sweden 4 Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, The Netherlands 5 Department of Health Science, University of Milano-Bicocca, Monza, ItalyMario Fafangelmario.fafangel nijz.si
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Citation style for this article: Fafangel Mario, Cassini Alessandro, Colzani Edoardo, Klavs Irena, Grgič Vitek Marta, Učakar Veronika, Muehlen Marion, Vudrag Marko, Kraigher Alenka. Estimating the annual burden of tick-borne encephalitis to inform vaccination policy, Slovenia, 2009 to 2013. Euro Surveill. 2017;22(16):pii=30509. https://doi.org/10.2807/1560-7917.ES.2017.22.16.30509 Received: 11 Jul 2016; Accepted: 09 Sept 2016
Abstract
With an annual incidence between 8 and 15 per 100,000 population in the period from 2009 to 2013, Slovenia has one of the highest notified incidences of tick-borne encephalitis (TBE) in Europe. TBE vaccination coverage remains at about 7.3%. To inform vaccination policy, we used surveillance data from 2009 to 2013 to calculate the overall and age- and sex-specific mean annual TBE incidence. We estimated disability-adjusted life years (DALYs) with 95% uncertainty intervals (UI), using the Burden of Communicable Diseases in Europe approach from the European Centre for Disease Prevention and Control. The mean annual incidence was 11.6 per 100,000 population, peaking in older age groups (50–74 years: 18.5/100,000) while relatively lower among children (5–14 years: 10.2/100,000). We estimated an overall 10.95 DALYs per 100,000 population per year (95% UI: 10.25-11.65). In contrast to the TBE incidence, the disease burden in children aged 5–14 years was higher than in adults aged 50–74 years: 17.31 (95% UI: 14.58–20.08) and 11.58 (95% UI: 10.25–12.91) DALYs per 100,000 stratum-specific population, respectively. In a limited resource setting where prioritisation of TBE vaccination strategies is required, vaccination programmes targeting children may have a higher impact on disease burden.
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