L'échinococcose alvéolaire dans le département français des Ardennes : cas isolés ou nouveau foyer ?

Depaquit, Jérôme; Gallego, Almudena Muñoz; Usseglio, F.; Liance, M.; Favriel, J. M.

doi:10.1051/parasite/1998053285

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…Our study provides the first information on the sylvatic cycle of E. multilocularis in the Ardennes region, where cases of human contamination with alveolar echinococcosis have been reported for more than 20 years (Depaquit et al , 1998; Piarroux et al , 2006). We estimated the prevalence in the fox population to range between 45.4 and 60.6%, a value similar to those recorded in the Doubs region, France (Raoul et al , 2001b), the city of Zurich, Switzerland (Hofer et al , 2000), the Swabian Jura, Germany (Romig et al , 1999b) and the Voralberg and Tyrol regions, Austria (Duscher et al , 2006), all regions where human cases have been detected in the past.…”

Section: Discussionmentioning

confidence: 77%

Ecological and biological factors involved in the transmission ofEchinococcus multilocularisin the French Ardennes

et al. 2008

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In order to identify the respective importance of the ecological and biological factors involved in the transmission of Echinococcus multilocularis, we estimated grassland vole intermediate host (Microtus sp. and Arvicola terrestris) population densities, in relation to the diet of the definitive host (red fox, Vulpes vulpes) and with the prevalence of E. multilocularis in the fox population. The study was conducted in the Ardennes, north-eastern France, which is an area with a high incidence of alveolar echinococcosis. Surface index methods showed that Microtus was the most abundant intermediate host in the area. Furthermore, Microtus was present in one-third of the 144 faeces and 98 stomach content samples examined and represented more than two-thirds of the rodent occurrences. Red fox predation on Microtus was significantly correlated with Microtus relative abundance. In contrast, the relative abundance of A. terrestris was very low. This species, as well as Clethrionomys glareolus and Apodemus sp., was little consumed. E. multilocularis prevalence in foxes was determined from carcasses and reached 53% (95% confidence interval 45-61%). Intensity of infection varied from 2 to 73,380 worms per fox, with 72% of the sampled worm burden harboured by 8% of the sampled foxes. The selected explanatory variables (sex, year, age class, health and nutritional condition, and season) failed to predict prevalence rate and worm burden. The high prevalence rate in foxes indicates the possibility of intense E. multilocularis transmission, apart from periods, or in landscapes, favourable to large population outbreaks of grassland rodents.

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Section: Discussionmentioning

confidence: 77%

Ecological and biological factors involved in the transmission ofEchinococcus multilocularisin the French Ardennes

et al. 2008

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“…The first human case of alveolar echinococcosis was diagnosed in 1984 in this region (Depaquit et al, 1998), which is located at the western limit of the E. multilocularis European distribution . Altitude ranges between 200 and 300 meters above sea level.…”

Section: Study Area T He Study Was Conducted From March 2004 Tomentioning

confidence: 99%

Fox faeces and vole distribution on a local range: ecological data in a parasitological perspective forEchinococcus multilocularis

2007

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Summary :The completion of the life cycle of Echinococcus multilocularis needs a spatial overlap between intermediate host species (voles) and definitive host (fox) faeces. Factors influencing the importance of this overlap were investigated in north eastern France. Kilometric transects were walked to collect fox faeces and to estimate vole relative densities through surface indices. Habitat and climatic conditions were the strongest predictors of the number of faeces collected, while vole densities had no predictive power. Densities of both Microtus sp. and fox faeces were higher in medium-height vegetation edge. The consequences of such results to understand local transmission processes and human exposure are discussed. Résumé : DISTRIBUTION SPATIALE DES FÈCES DE RENARD ET DES

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“…At the end of the 1990s, E. multilocularis in foxes was reported in only 10 of the 95 French departments (Figure 1). Studies conducted in the neighboring departments (departments 08, 21, 38, 52, 69, and 74) by sedimentation and counting technique ( 11 ) did not detect infection in foxes. However, since 1997, new cases of human echinococcosis have been recorded in areas without known infection of local fox populations (departments 01, 03, 07, 08, 12, 21, 23, 31, 35, 61, 44, 59, 61, 76, and 95) ( 2 ).…”

mentioning

confidence: 92%

Westward Spread ofEchinococcus multilocularisin Foxes, France, 2005–2010

Combes¹,

Comte²,

Raton³

et al. 2012

Emerg. Infect. Dis.

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L'échinococcose alvéolaire dans le département français des Ardennes : cas isolés ou nouveau foyer ?

Cited by 3 publications

References 2 publications

Ecological and biological factors involved in the transmission ofEchinococcus multilocularisin the French Ardennes

Ecological and biological factors involved in the transmission ofEchinococcus multilocularisin the French Ardennes

Fox faeces and vole distribution on a local range: ecological data in a parasitological perspective forEchinococcus multilocularis

Westward Spread ofEchinococcus multilocularisin Foxes, France, 2005–2010

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