Research article
Human transmissible spongiform encephalopathies in eleven countries: diagnostic pattern across time, 1993–2002
-
* Corresponding author: Jesús de Pedro-Cuesta jpedro@isciii.es
1 Instituto de Salud Carlos III, Centro Nacional de Epidemiologia, Departamento de Epidemiologia Aplicada, Calle Sinesio Delgado 6, 28029, Madrid, Spain
2 Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Martinistraße 52, D-20246 Hamburg, Germany
3 Institute of Neuropathology, University Hospital Zurich, Switzerland
4 Registry of Creutzfeldt-Jakob disease, -Department of Cell. Biology and Neurosciences, Istituto Superiore di Sanita, Viale Regina Elena 299, 00161 Rome, Italy
5 Department of Neurology, Georg-August-Universität Göttingen, Robert-Koch Strasse 40, 37075 Gottingen, Germany
6 Department. of Neuropathology, Ludwig-Maximilian University, Munich, Germany
7 U.708 INSERM, Hopital de la Salpetriere, 75651 Paris, Cedex 13, France
8 Department of Epidemiology and Biostatistics, Erasmus MC, PO Box 1738, 3000 DR Rotterdam, The Netherlands
9 Australian National Creutzfeldt-Jakob disease Registry, Department of Pathology, The University of Melbourne, Parkville, Australia
10 CJD Surveillance System, Division of Host Genetics and Prion Diseases, Public Health Agency of Canada, LCDC Building, AL 0601E2, Tunney's Pasture, Ottawa, Ontario, K1A 0L2, Canada
11 Institute of Neurology, Medical University of Vienna, and Austrian Reference Centre for Human Prion Diseases, AKH 4J, A-1097 Vienna, Austria
12 Research base of Slovak Medical University, Bratislava, Slovakia
BMC Public Health 2006, 6:278 doi:10.1186/1471-2458-6-278
Published: 10 November 2006Abstract
Background
The objective of this study was to describe the diagnostic panorama of human transmissible spongiform encephalopathies across 11 countries.
Methods
From data collected for surveillance purposes, we describe annual proportions of deaths due to different human transmissible spongiform encephalopathies in eleven EUROCJD-consortium countries over the period 1993–2002, as well as variations in the use of diagnostic tests. Using logistic models we quantified international differences and changes across time.
Results
In general, pre-mortem use of diagnostic investigations increased with time. International differences in pathological confirmation of sporadic Creutzfeldt-Jakob disease, stable over time, were evident. Compared to their counterparts, some countries displayed remarkable patterns, such as: 1) the high proportion, increasing with time, of variant Creutzfeldt-Jakob disease in the United Kingdom, (OR 607.99 95%CI 84.72–4363.40), and France (OR 18.35, 95%CI 2.20–152.83); 2) high, decreasing proportions of iatrogenic Creutzfeldt-Jakob disease in France, (OR 5.81 95%CI 4.09–8.24), and the United Kingdom, (OR 1.54 95%CI 1.03–2.30); and, 3) high and stable ratios of genetic forms in Slovakia (OR 21.82 95%CI 12.42–38.33) and Italy (OR 2.12 95%CI 1.69–2.68).
Conclusion
Considerable international variation in aetiological subtypes of human transmissible spongiform encephalopathies was evident over the observation period. With the exception of variant Creutzfeldt-Jakob disease and iatrogenic Creutzfeldt-Jakob disease in France and the United Kingdom, these differences persisted across time.