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BMC Public Health. 2006 Nov 10;6:278.

Human transmissible spongiform encephalopathies in eleven countries: diagnostic pattern across time, 1993-2002.

Author information

  • 1Instituto de Salud Carlos III, Centro Nacional de Epidemiologia, Departamento de Epidemiologia Aplicada, Calle Sinesio Delgado 6, 28029, Madrid, Spain. jpedro@isciii.es

Abstract

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.

PMID:
17096829
[PubMed - indexed for MEDLINE]
PMCID:
PMC1665456
Free PMC Article
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