References of "Losson, Bertrand"
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See detailCurrent status of fasciolosis in Vietnam: an update and perspectives
Bui Thi, Dung ULg; Pham, Ngoc Doanh; Saegerman, Claude ULg et al

in Journal of Helminthology (2015)

Vietnam is recognized as endemic for fasciolosis. However, most of the available publications have not been published in international journals. This review is based on national and international ... [more ▼]

Vietnam is recognized as endemic for fasciolosis. However, most of the available publications have not been published in international journals. This review is based on national and international Vietnamese publications and highlights the current status of fasciolosis in Vietnam. It also provides some information available in neighboring countries. Updated data on responsible species, distribution, transmission and control aspects, are summarized. The Central region of Vietnam is reported as being highly endemic for fasciolosis with a high number of human patients (more than 20.000 in 2011). Fasciola gigantica is reported as the main species in Vietnam. However, hybrids between F. gigantica and F. hepatica were identified. Both human and animals are infected by the ingestion of raw vegetables and possibly contaminated drinking water. Three lymnaeid snail species (Austropeplea viridis, Radix auricularia, Radix rubiginosa) may act as intermediate host of Fasciola spp. However due to the likely misidentification of snail species and cercariae during the previous decade the critical analysis of published data is difficult. A better understanding of transmission aspects of fasciolosis would allow the implementation of preventive measures of this important neglected zoonotic disease. [less ▲]

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See detailNew insight in lymnaeid snails (Mollusca, Gastropoda) as intermediate hosts of Fasciola hepatica (Trematoda, Digenea) in Ecuador
Caron, Yannick ULg; Celi-Erazo, Maritza; Hurtrez-Boussès, Sylvie et al

Conference (2015, August)

Fasciolosis is a widely distributed disease in livestock in South America but knowledge about the epidemiology and the intermediate hosts are scarce in Ecuador. During 3 months, lymnaeid snails were ... [more ▼]

Fasciolosis is a widely distributed disease in livestock in South America but knowledge about the epidemiology and the intermediate hosts are scarce in Ecuador. During 3 months, lymnaeid snails were sampled (n=1482) in Pichincha province in two sites located in a highly endemic area. The snails were identified (based on morphology and ITS2 sequences) and the infection status was established through microscopic dissection and a multiplex PCR-based technique. If morphologic-based techniques were not useful to accurately named the one species collected, alignment study ascribed it to L. schirazensis. Rediae were observed in 1.75 % (26/1482) and Fasciola sp. DNA was detected in 6% (89/1482) of the collected snails. The COX1 region permitted the parasite species identification: F. hepatica. The relative sensitivity and specificity of the microscope related to the PCR results was 25.84% and 99.78% respectively. The mean size of the snails recorded positive for F. hepatica through crushing and microscopy was significantly higher than the mean size of negative snails. There was not such difference in PCR positive snails. The role of G. schirazensis as an intermediate host of F. hepatica in Ecuador is discussed and a hypothesis of an adaptation of the snail to the trematoda is formulated. For the first time, an epidemiological survey, based on molecular biology-based techniques assessed the role of lymnaeid snail in the epidemiology of fasciolosis in Ecuador. [less ▲]

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See detailFirst report od a fatal autochtonous canine Angyostrongylus vasorum infection in Belgium
Jolly, Sandra ULg; Lempereur, Laetitia ULg; Caron, Yannick ULg et al

in Parasitology International (2015), 64(1),

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See detaila retrospective serological survey on human babesiosis in Belgium
Lempereur, Laetitia ULg; Shiels, Brian; Saegerman, Claude ULg et al

in Clinical Microbiology and Infection (2015), 21(1),

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See detailLes porcheries : réservoirs des Culicoides (Diptera: Ceratopogonidae), vecteurs des virus de la Maladie de la Langue bleue et de Schmallenberg ?
Zimmer, Jean-Yves ULg; Saegerman, Claude ULg; Martinelle, Ludovic ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2014), 18(4), 480-487

La fièvre catarrhale ovine (FCO) est une arbovirose qui affecte les ruminants domestiques et sauvages. Depuis sa récente apparition en Europe du Nord, cette épizootie virale a engendré des pertes ... [more ▼]

La fièvre catarrhale ovine (FCO) est une arbovirose qui affecte les ruminants domestiques et sauvages. Depuis sa récente apparition en Europe du Nord, cette épizootie virale a engendré des pertes économiques considérables. Les vecteurs biologiques du virus de la FCO sont des moucherons piqueurs appartenant au genre Culicoides (Diptera : Ceratopogonidae). Plusieurs campagnes de piégeage lumineux de ces moucherons adultes ont été réalisées précédemment en Belgique au sein d’exploitations bovines et ovines, mais aucune à l’intérieur des exploitations porcines. Cette étude vise donc à évaluer, au moyen de pièges lumineux, les populations de culicoïdes éventuellement présentes à l’intérieur de deux porcheries belges au cours de l’automne et de l’hiver 2008. La présence des espèces (potentiellement) vectrices du genre Culicoides a ainsi été mise en évidence à l’intérieur de ces bâtiments durant l’automne : 8 et 749 spécimens appartenant à 2 et 7 espèces ont ainsi respectivement été piégés au sein des porcheries, avec une majorité de femelles du complexe Obsoletus. L’ouverture des bâtiments semble fortement influencer leur présence. L’observation du statut alimentaire des femelles laisse supposer que ces moucherons sont susceptibles de se nourrir ou de pondre au sein des porcheries, même si le sang de porc n’a pas pu être identifié dans l’abdomen des femelles gorgées et que le lisier n’a pas révélé la présence de larves. Les porcs pourraient ainsi intervenir dans le maintien des populations d’espèces potentiellement vectrices du virus de la FCO, ou du nouveau virus dénommé virus Schmallenberg. [less ▲]

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See detailPhenotyping Belgian Blue cattle for their susceptibility to psoroptic mange
Abos, Romain ULg; Coussé, Annelies; Sarre, Charlotte et al

Poster (2014, October 17)

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See detailA case of trichurosis in gilts and fattening pigs
Caron, Yannick ULg; Delleur, Valery ULg; Cassart, Dominique ULg et al

in JMM Case Reports (2014)

Trichuris suis, also called whipworm, is a parasite of the caecum and colon distributed widely and considered as a fairly common parasite in swine. It may be responsible for porcine trichurosis ... [more ▼]

Trichuris suis, also called whipworm, is a parasite of the caecum and colon distributed widely and considered as a fairly common parasite in swine. It may be responsible for porcine trichurosis characterized by diarrhoea, anorexia, growth retardation, dehydration, emaciation and anaemia. This report presents a case of trichurosis diagnosed in a farrow-to-finish Belgian pig herd. The infection was associated with severe and persistent diarrhoea, growth retardation, emaciation and/or anaemia in 10 recently purchased gilts and in fattening pigs. In gilts, levamisole [8 mg/kg body weight] administered once per os gave a good clinical response, as diarrhoea resolved in nine gilts out of 10. In parallel, for these nine gilts, the number of eggs of T. suis/g faeces passed decreased from 12 400 to less than 100 eggs. In fattening pigs, flubendazole (1 mg/kg BW) administrated over 5 days in drinking water allowed a reduction in the number of T. suis eggs/g and was effective against diarrhoea. Although most of the time pig whipworm infections are light and asymptomatic, in some cases when large numbers of worms are present, they can cause watery to bloody diarrhoea that can lead to anaemia. This less frequent disease should not be forgotten in the differential diagnosis of persistent diarrhoea in growing pigs. [less ▲]

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See detailDetection of Angiostrongylus vasorum in the bronchoalveolar lavage fluid or faeces of coughing and healthy dogs in Belgium.
Canonne-Guibert, Morgane ULg; Roels, Elodie ULg; Caron, Yannick ULg et al

in Proceedings of the 24th Ecvim Meeting, Mainz, Germany - 4-6 September 2014 (2014, September)

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See detailBluetongue, Schmallenberg - what is next? Culicoides-borne viral diseases in the 21st Century
Koenraadt, CJM; Balenghien, T; Carpenter, S et al

in BMC Veterinary Research (2014), 10

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See detailComparison of different serological methods to detect antibodies specific to Neospora caninum in bovine and canine sera
Ghalmi, F; China, B; Jenkins, M et al

in Journal of Veterinary Diagnostic Investigation (2014), 26(1), 136-140

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See detailFirst report of a fatal autochthonous canine Angiostrongylus vasorum infection in Belgium
Jolly, Sandra ULg; Poncelet, Luc; Lempereur, Laetitia ULg et al

in Parasitology International (2014)

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See detailLa Besnoitiose maladie réémergente en Europe
Vanvinckenroye, Caroline ULg; Caron, Yannick ULg; Losson, Bertrand ULg

in Veterinaria (Bruxelles) : Bulletin d’Information de l’Union Syndicale Vétérinaire Belge (2014)

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See detailAttaques massives de simulies et mort brutale
Caron, Yannick ULg; Losson, Bertrand ULg

in Veterinaria (Bruxelles) : Bulletin d’Information de l’Union Syndicale Vétérinaire Belge (2014)

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See detailComparaison des populations de Culicoides Latreille 1809 (Diptera: Ceratopogonidae) présentes au sein d’une bergerie belge et d’une prairie ovine associée
Zimmer, Jean-Yves ULg; Losson, Bertrand ULg; Saegerman, Claude ULg et al

in Annales de la Société Entomologique de France (2013), 49(4), 446-459

Culicoides biting midges (Diptera: Ceratopogonidae) serve as biological vectors for several pathogens, including the Bluetongue virus and the recently described Schmallenberg virus in northern Europe ... [more ▼]

Culicoides biting midges (Diptera: Ceratopogonidae) serve as biological vectors for several pathogens, including the Bluetongue virus and the recently described Schmallenberg virus in northern Europe. These diseases have caused considerable direct and indirect economic losses to the sheep and cattle industries. This study undertaken between August and December 2007 on a sheep farm in the Namur province (Belgium) aims to evaluate Culicoides populations present inside a partially opened sheepfold and in a nearby sheep meadow, using light traps. The comparative analysis of insects trapped at 18 dates at regular intervals showed that Culicoides were most abundant Inside this livestock building (17,450 midges) than in surrounding meadow (1,121 midges); this meadow had however a greater species diversity. The two species C. obsoletus and C. scoticus constituting the Obsoletus complex predominated for all trappings and females were much more numerous than males. Important capture of engorged females of the Obsoletus complex inside the sheepfold seems to reflect the possibility of an opportunistic endophagous behavior. Maintaining sheep inside livestock buildings in order to reduce the risk of Culicoides bites – and thus of pathogens transmission – however requires to limit biting midge populations which are likely to enter or to develop inside these buildings. Implementation of effective sanitation and hygiene measures against midges present inside farms, as well as establishing of measures to protect livestock against intrusion and improvement of “midge-proofing” of animal housing are therefore highly recommended. [less ▲]

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See detailMorphological and Molecular Characterization of Lymnaeid Snails and Their Potential Role in Transmission of Fasciola spp. in Vietnam
Bui Thi, Dung ULg; Pham Ngoc, Doanh; Dang Tat, The et al

in Korean Journal of Parasitology (2013), 51(6), 657-662

Freshwater snails of the family Lymnaeidae play an important role in the transmission of fascioliasis worldwide. In Vietnam, 2 common lymnaeid species, Lymnaea swinhoei and Lymnaea viridis, can be ... [more ▼]

Freshwater snails of the family Lymnaeidae play an important role in the transmission of fascioliasis worldwide. In Vietnam, 2 common lymnaeid species, Lymnaea swinhoei and Lymnaea viridis, can be recognized on the basis of morphology, and a third species, Lymnaea sp., is known to exist. Recent studies have raised controversy about their role in transmission of Fasciola spp. because of confusion in identification of the snail hosts. The aim of this study is, therefore, to clarify the identities of lymnaeid snails in Vietnam by a combination of morphological and molecular approaches. The molecular analyses using the second internal transcribed spacer (ITS2) of the nuclear ribosomal DNA clearly showed that lymnaeids in Vietnam include 3 species, Austropeplea viridis (morphologically identified as L. viridis), Radix auricularia (morphologically identified as L. swinhoei) and Radix rubiginosa (morphologically identified as Lymnaea sp.). R. rubiginosa is a new record for Vietnam. Among them, only A. viridis was found to be infected with Fasciola spp. These results provide a new insight into lymnaeid snails in Vietnam. Identification of lymnaeid snails in Vietnam and their role in the liver fluke transmission should be further investigated. [less ▲]

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See detailAre bogs reservoirs for emerging disease vectors? Evaluation of Culicoides populations in the Hautes Fagnes Nature Reserve (Belgium)
Zimmer, Jean-Yves ULg; Losson, Bertrand ULg; Smeets, François ULg et al

Poster (2013, October)

Several species of Culicoides (Diptera: Ceratopogonidae) biting midges serve as biological vec{ors for the bluetongue virus (BTV) and the recently described Schmallenberg virus in northern Europe. since ... [more ▼]

Several species of Culicoides (Diptera: Ceratopogonidae) biting midges serve as biological vec{ors for the bluetongue virus (BTV) and the recently described Schmallenberg virus in northern Europe. since their recent emergence in this part of the continent, these diseases have caused considerable economic losses to the sheep and cattle industries. Much data is nou, âvailable that describe the distribuüon, population dynamics, and feeding habits of these insects. However, little is known regarding the presence of culicoides in unusual habitats such as peaÿ marshes, nor their potential vector capacity. This study evaluated Culicoides biting midges present in the bogs of a Belgian nature reserve compared to those residing at a nearby cattle farm. Culicoides were trapped in 2011 at four different sites (broadleaved and coniferous forested areas, open environments, and at a scientific station) located in the Hautes Fagnes Nature Reserve (Belgium). An additional light trap was operated on a nearby caftle farm. High numbers of biting midges were captured in the marshy area and most of them were Culicoides impunc{atus, a potential vector of BïV and other pâthogens. ln addition, fewer numbers of c. obsoletus/c. scoticus species, C. chiopterus, and C. dewulfi were observed in the bogs compared to the farm. The wet environment and oligotrophic nature of the soil were probably responsible for these changes in the respective populations. A total of 297,808 Culicoides midges belonging to 27 species were identified during this study and 3 of these species (C. sphagnumensis, C. clintoni and C. comosioculatus) were described in Belgium for the first time. [less ▲]

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See detailPrevalence and Richness of Gastrointestinal Parasites of Capuchins (Cebus albifrons) Interacting with humans in the Ecuadorian Amazon
Ramirez, William; Martin, Sarah ULg; Carrillo Bilbao, Gabriel Alberto et al

Poster (2013, September 10)

Detailed reference viewed: 91 (6 ULg)