References of "Losson, Bertrand"
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See detailHepatic alveolar echinococcosis.
DETRY, Olivier ULiege; MEURISSE, Nicolas ULiege; Delwaide, Jean ULiege et al

in Acta Chirurgica Belgica (2018), 118(3), 200-201

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See detailAlveolar echinococcosis in southern Belgium: retrospective experience of a tertiary center.
Cambier, Audrey ULiege; LEONARD, Philippe ULiege; Losson, Bertrand ULiege et al

in European Journal of Clinical Microbiology and Infectious Diseases (2018), 37(6), 1195-1196

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See detailPrise en charge multidisciplinaire de l'echinococcose alveolaire : le groupe Echino-Liege.
Cambier, Audrey; GIOT, Jean-Baptiste ULiege; LEONARD, Philippe ULiege et al

in Revue Médicale de Liège (2018), 73(3), 135-142

Alveolar echinococcosis is a zoonotic disease due to the tapeworm Echinococcus multilocularis. The definitive host is the red fox. Until recently, Belgium was considered a country at very low risk for ... [more ▼]

Alveolar echinococcosis is a zoonotic disease due to the tapeworm Echinococcus multilocularis. The definitive host is the red fox. Until recently, Belgium was considered a country at very low risk for alveolar echinococcosis. However, recent studies carried out in southern Belgium have revealed, through post-mortem examination, high prevalences (up to 62 %) in foxes. Cats and dogs can act as definitive hosts. Human are accidentally infected by ingestion of food contaminated by the feces. After a long incubation period, invasive hepatic lesions may appear, as well as extra-hepatic lesions. The disease may be fatal. The diagnosis is based on imaging techniques, serology and nucleic acid detection in tissues. Early diagnosis may allow surgical removal of the lesion associated with at least 2 years of albendazole postoperative treatment. In case of contraindication to surgery, a long term treatment with albendazole is necessary. Liver transplantation is sometimes necessary. This article presents the epidemiologic, clinical, diagnostic and therapeutics features of this zoonotic disease. [less ▲]

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See detailAlveolar echinococcosis is now endemic in southern Belgium
Cambier, A; Leonard, Philippe ULiege; Losson, Bertrand ULiege et al

in Acta Gastro-Enterologica Belgica (2018, January), 81(1), 31

Introduction: Until now, Belgium has been considered as a low-risk country for alveolar echinococcosis (AE). However it was recently demonstrated by necropsy series that up to 51% of the red foxes (Vulpes ... [more ▼]

Introduction: Until now, Belgium has been considered as a low-risk country for alveolar echinococcosis (AE). However it was recently demonstrated by necropsy series that up to 51% of the red foxes (Vulpes vulpes) may be infected by E. multilocaris in some parts of Southern Belgium. The first local Belgian human AE cases were described in the early 2000's. Aim: The aim of this study was to report the experience of a tertiary university hospital of Southern Belgium with AE management. Methods: The authors retrospectively collected data from the parasitology laboratory (serologies), the hospital pharmacy in charge of supplying albendazole, and by searching through patient’s files with medico-economic information service of a tertiary university hospital. The medical files were retrospectively reviewed. Results: Twenty-one cases (66% male) of local AE have been recorded from 1999 to 2016. All patients were Belgian citizens with more than 30 years of life in Southern Belgium (Liege province: 10 cases (47.4%), Luxembourg province: 8 cases (36.8%), Namur Province: 3 cases (15.8 %)). Mean age of diagnosis was 66 years (ranges: (35-85y). Eighteen patients had hepatic involvement: 14 underwent surgical resection and 5 had unresectable liver lesions and underwent albendazole palliative therapy until death. During the same period, the faculty of veterinary medicine observed an increased rate of lethal hepatic AE in dogs, another indication of high AE incidence. Conclusions: AE appears to be spreading in Belgium and has actually an uneven geographical distribution with endemicity in areas of Southern and Eastern Belgium. However, it is probable that local AE cases will be diagnosed in the whole country, considering that there is no reason that infected foxes remain in Southern Belgium and also the fact that some people from Northern Belgium might spend long period in Southern Belgium, with or without their dogs. The liver is the most frequently involved organ and the only cure can be achieved by complete R0 resection of all AE lesions. In reaction to this experience, the authors created a multidisciplinary group for AE diagnosis and management, including hepatologists, infectiologists, microbiologists, pathologists, radiologists, nuclear medicine specialists, surgeons and veterinarians. The authorities should be aware of this medical issue and should facilitate the access to Albendazole for AE patients. A complete national survey should be encouraged, and BASL might have an important role in this study. [less ▲]

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See detailL’Echinococcose alvéolaire, une zoonose émergente en Wallonie. Une approche « one health » par le groupe ECHINO-LIEGE
Cambier, Audrey ULiege; DETRY, Olivier ULiege; Lempereur, Laetitia ULiege et al

in Veterinaria: Bulletin d'Information de l'Union Syndicale Vétérinaire Belge (2018)

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See detailFirst evidence of Besnoitia bennetti infection (Protozoa: Apicomplexa) in donkeys (Equus asinus) in Belgium
Lienard, Emmanuel; Nabuco, Adriana; Vandenabeele, Sophie et al

in Parasites and Vectors (2018), 11(1), 427

BACKGROUND: Besnoitiosis is caused by different species of intracellular protozoan parasites belonging to the family Sarcocystidae and affecting multiple host species worldwide. Including B. besnoiti, ten ... [more ▼]

BACKGROUND: Besnoitiosis is caused by different species of intracellular protozoan parasites belonging to the family Sarcocystidae and affecting multiple host species worldwide. Including B. besnoiti, ten species are described infecting animals. Among ungulates, Besnoitia bennetti infects horses, donkeys and zebras and was described in Africa and in the USA where donkey besnoitiosis is considered as an emerging disease. CASE PRESENTATION: A two-year-old male donkey was purchased in May 2016 in poor body condition (cachexia, alopetic areas and pruritus mainly on neck and head) by the present owner in Le Roeulx (Belgium) from a milk producing donkey farm in Frasnes-lez-Buissenal (Belgium). Shortly after its purchase and shearing, the donkey presented with crusts, hyperkeratosis (both flanks and neck) anorexia and cachexia. A treatment with phoxim was given with no improvement. A cutaneous biopsy of hyperkeratotic skin was performed in July. It showed a perivascular eosinophilic infiltrate with a large thick walled cyst located in the dermis containing numerous bradyzoites. This was highly suggestive of besnoitiosis. Several skin biopsy samples were obtained for qPCR analysis and confirmed the presence of Besnoitia spp. DNA. Further laboratory diagnosis tests were performed (western blot and rDNA sequencing) confirming Besnoitia bennetti aetiology for the male. For the female, the punch-biopsy, haematology and qPCR were negatives but the western blot showed the presence of antibodies directed to Besnoitia spp. Further clinical examination performed in August highlighted scleral pinhead sized cysts (pearl) in the right eye and between nares. Another ten-year-old female donkey purchased in France and sharing the same accommodation showed a good clinical condition, but a thorough clinical examination showed the presence of numerous cysts on the inner face of upper labial mucosa. A daily treatment based on sulfamethaxzole and trimethoprim (Emdotrim 60% Mix(R), 30 mg/kg) was given orally and some improvement was noticed. CONCLUSION: This is the first evidence of Besnoitia bennetti infection (Protozoa: Apicomplexa) in donkeys (Equus asinus) in Belgium. [less ▲]

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See detailDispersal capacity of Haematopota spp. and Stomoxys calcitrans using a mark–release–recapture approach in Belgium
Lempereur, Laetitia ULiege; Sohier, Charlotte; Smeets, François et al

in Medical and Veterinary Entomology (2018)

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See detailATYPICAL DICTYOCAULUS VIVIPAROUS-ASSOCIATED BOVINE ACUTE PNEUMONITIS: REMINISCENT OF LARVAL HYPOBIOSIS DURING THE WINTER?
Bayrou, Calixte ULiege; Dernier, Adrienne ULiege; Cassart, Dominique ULiege et al

Conference (2017, October)

Dictyocaulus viviparus is the aetiological agent of verminous bronchitis in cattle. Herein we describe an atypical case of parasitic pneumonitis in an adult cow. Methods At the end of March 2017, a 3-yr ... [more ▼]

Dictyocaulus viviparus is the aetiological agent of verminous bronchitis in cattle. Herein we describe an atypical case of parasitic pneumonitis in an adult cow. Methods At the end of March 2017, a 3-yr old Belgian Blue cow suddenly displayed a marked respiratory distress syndrome a few hours after C-section calving. In spite of the treatment set up by the local veterinarian, the cow died 48 hours later. The body was referred to the Veterinary Faculty of Liège (Belgium) for necropsy. Post- mortem gross examination revealed a severe, acute interstitial pneumonitis with concurrent emphysema and a significant amount of parasites (Dictyocaulus viviparus) in the bronchi. The microscopic examination confirmed the severe acute interstitial pneumonitis with foci of hemorrhages, necrosis, hyaline membranes and hyperplasia of type II pneumocytes. Larvae were also present in the alveoli and bronchioles. Results Altogether, theses clinical observations and lesions were compatible with a hypersensitivity reaction against worm antigens. Additionally, Baermann’s test was performed on feces collected from the cadaver and from 5 others cows kept under the same conditions. Four out of 6 cows were excreting small amounts of Dictyocaulus stage-1 larvae. Conclusions Parasitic pneumonia is a very common disease in first year grazing young cattle. In this case, cow’s age and disease manifestation time were very uncommon. Three-year-old cows are supposed to be fully protected against this nematode species. Moreover, in Belgium, at the end of March, livestock is still kept indoors (zero grazing winter period). Therefore, this case could highlight the hypobiotic capacity of Dictyocaulus viviparus larvae and associated « periparturient rise » phenomenon, both well known in sheep, but not described in cattle so far. We herein discuss the farming conditions that promoted such a severe parasitic respiratory disease. [less ▲]

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See detailGastrointestinal Parasites in Captive and Free-ranging Cebus albifrons in the Western Amazon, Ecuador.
Martin, Sarah ULiege; Carrillo Bilbao, Gabriel Alberto; Ramirez, William et al

in International Journal for Parasitology: Parasites and Wildlife (2017)

Currently, there is a lack of surveys that report the occurrence of gastrointestinal parasites in the white-headed capuchin monkey (Cebus albifrons). We therefore assessed the presence and richness ... [more ▼]

Currently, there is a lack of surveys that report the occurrence of gastrointestinal parasites in the white-headed capuchin monkey (Cebus albifrons). We therefore assessed the presence and richness (= number of different parasite genera) of parasites in C. albifrons in wildlife refuges (n = 11) and in a free-ranging group near a human village (n = 15) in the Ecuadorian Amazon. In the 78 samples collected (median of 3 samples per animal), we identified a total of 6 genera of gastrointestinal parasites, representing protozoa, nematodes, acantocephalan and cestodes. We observed a high prevalence (84%) across the 26 individuals, with the most prevalent parasite being Strongyloides sp. (76.9%), followed by Hymenolepis sp. (38.5%) and Prosthenorchis elegans (11.5%). We found Entamoeba histolytica/dispar/moskovskii/nuttalli and Capillaria sp. in only a minority of the animals (3.8%). In addition, we observed unidentified strongyles in approximately one-third of the animals (34.6%). We found a total of 6 parasite genera for the adult age group, which showed higher parasite richness than the subadult age group (5) and the juvenile age group (3). Faecal egg/cyst counts were not significantly different between captive and free-ranging individuals or between sexes or age groups. The free-ranging group had a higher prevalence than the captive group; however, this difference was not significant. The only genus common to captive and free-ranging individuals was Strongyloides sp. The high prevalence of gastrointestinal parasites and the presence of Strongyloides in both populations support results from previous studies in Cebus species. This high prevalence could be related to the high degree of humidity in the region. For the free-ranging group, additional studies are required to gain insights into the differences in parasite prevalence and intensity between age and sex groups. Additionally, our study demonstrated that a serial sampling of each individual increases the test sensitivity. [less ▲]

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See detailCrassicauda boopis in a fin whale (Balaenoptera physalus) ship-struck in the eastern North Atlantic Ocean
Lempereur, Laetitia ULiege; Delobelle, Morgan; Doom, Marjan et al

in Parasitology Open (2017), 3

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See detailIs Galga schirazensis (Mollusca, Gastropoda) an intermediate host of Fasciola hepatica (Trematoda, Digenea) in Ecuador ?
Caron, Yannick ULiege; Celi-Erazo, M; Hurtrez-Bousses, S et al

in Parasite (2017), 24

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See detailCranial abdominal mass due to Echinococcus multilocularis in a two-year-old wirehaired dachshund in Wallonia (Belgium)
Caron, Yannick ULiege; Losson, Bertrand ULiege; Bayrou, Calixte ULiege et al

in Veterinary Record Case Reports (2017), 5(1),

A cranial abdominal mass on the left side was detected upon palpation in a two-and-a-half-year-old male wirehaired dachshund. No other clinical signs were recorded except exhaustion following exertion ... [more ▼]

A cranial abdominal mass on the left side was detected upon palpation in a two-and-a-half-year-old male wirehaired dachshund. No other clinical signs were recorded except exhaustion following exertion, and soft faeces. Abdominal echography showed hepatomegaly with extensive histological alterations; microscopical examination of smears from hepatic mass and fluid punction revealed a low cellularity and protoscolex-like structures. Following those findings, euthanasia was requested by the owner. Necropsy revealed a severe multifocal chronic active hepatitis with some degree of right ventricular dilatation. Based on histopathology and PCR, a diagnosis of alveolar echinococcosis due to Echinococcus multilocularis was established. The dog was living in the Ardennes region in Belgium known as being endemic for E multilocularis. The present observation is in agreement with a similar canine case previously published and the high prevalence of E multilocularis in the local fox population. © British Veterinary Association. [less ▲]

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See detailSwimmer's Itch in Belgium: First Recorded Outbreaks, Molecular Identification of the Parasite Species and Intermediate Hosts.
Caron, Yannick ULiege; Cabaraux, Ariane; Marechal, Francoise et al

in Vector Borne and Zoonotic Diseases (2017)

BACKGROUND: Cercarial dermatitis or swimmer's itch is a skin condition in humans due to the larval forms of bird schistosomes of some species of the genus Trichobilharzia. The life cycle of these ... [more ▼]

BACKGROUND: Cercarial dermatitis or swimmer's itch is a skin condition in humans due to the larval forms of bird schistosomes of some species of the genus Trichobilharzia. The life cycle of these schistosomes requires freshwater snails (intermediate host) and waterfowl (definitive host). Repeated exposures to cercariae can lead to skin sensitization with the induction of pruritic skin lesions. METHODS: We describe, in this study, two outbreaks of human cercarial dermatitis at the Eau d'Heure Lakes, Belgium. In July and August 2012, a total of, respectively, 78 and 10 people reported a sudden skin rash accompanied by pruritus following recreational activities in the Plate Taille Lake. However, no ocellate furcocercariae were detected following light exposure of the snails collected between September 2012 and September 2013 (n = 402). No outbreaks were recorded in 2013 and 2014. In August 2015, about 30 new cases were recorded. Snails were collected (n = 270) in different locations around the lake. PCR was used to identify accurately the intermediate hosts and the parasite species involved. RESULTS: After light exposure, seven Radix spp. (2.6%) shed ocellate furcocercariae. Molecular identification based on the rDNA internal transcribed spacer 2 sequence ascribed the infected snails to R. balthica ( = R. peregra = R. ovata) (6/7) and R. auricularia (1/7). Based on the amplification of the D2 domain of the 28S rDNA, the cercariae were shown to belong to two different haplotypes of Trichobilharzia franki. CONCLUSIONS: This is the first record in Belgium of T. franki and associated skin condition. [less ▲]

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See detailCrassicauda boopis in a fin whale (Balaenoptera physalus) ship-struck in the eastern North Atlantic Ocean.
Lempereur, Laetitia ULiege; Delobelle, M; Doom, M et al

Conference (2017)

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See detailActualités sur les vecteurs et les maladies vectorielles – Stomoxes et Tabanidés.
Lempereur, Laetitia ULiege; Sohier, Ch; Smeets, F et al

Conference (2017)

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See detailFifth European Dirofilaria and Angiostrongylus Days (FiEDAD) 2016
Simón, F.; Kartashev, V.; González-Miguel, J. et al

in Parasites and Vectors (2017), 10(1), 5

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See detailSarcoptic mange infection in red foxes (Vulpes vulpes) in Belgium
Volpe, Rosario ULiege; Caron, Yannick ULiege; Lesenfants, Christophe ULiege et al

Poster (2016, August)

Eight cases of sarcoptic mange in foxes were reported during summer 2014 (n=3) and winter 2015 (n= 5) in Belgium. All animals came from the same restricted forest zones near urbanized areas and some of ... [more ▼]

Eight cases of sarcoptic mange in foxes were reported during summer 2014 (n=3) and winter 2015 (n= 5) in Belgium. All animals came from the same restricted forest zones near urbanized areas and some of them were discovered in private gardens (Forest District of Thuin, Hainaut, Belgium). Three of them were found dead, the others were shot for sanitary reasons. At necropsy, all of them presented large areas of alopecia and extensive skin lesions such as hyperkeratosis and suppurative lacerations. Animals presented poor body condition and some of them were severely emaciated (absence of visceral fat). Mange has profound influences on population since, if untreated, death follows in four to six months. In the present cases, cutaneous scrapings and histopathological examinations were systematically performed. Numerous parasites were observed in skin scrapings and marked dermo-epidermatitis with several parasites was observed in histopathological sections. These results suggest an outbreak of sarcoptic mange in red foxes in a limited area of the country. This is a first record for the country. Furthermore, investigations on lungs and digestive tracts performed on 3 of these foxes revealed they were also infected by parasites transmissible to pets and/or humans: Angiostrongylus vasorum was observed in the respiratory tract of one fox whereas Toxocara canis, Uncinaria stenocephala, Taenia spp. and Echinococcus multilocularis worms were detected in the digestive tract. In conclusion, urban foxes represent a source of parasites of public health and veterinary importance and foxes surveillance should be strengthened in these areas. [less ▲]

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See detailPrevalence of Angiostrongylus vasorum in Belgium, a coprological and serological survey.
Lempereur, Laetitia ULiege; Martinelle, L; Marechal, F et al

Conference (2016)

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See detailPrevalence of Angiostrongylus vasorum in southern Belgium, a coprological and serological survey.
Lempereur, Laetitia ULiege; Martinelle, Ludovic ULiege; Marechal, Francoise et al

in Parasites and Vectors (2016), 9(1), 533

BACKGROUND: Canine angiostrongylosis, a gastropod-borne helminthic infection, is increasingly being described in North America and is now reported in many European countries. In dogs, Angiostrongylus ... [more ▼]

BACKGROUND: Canine angiostrongylosis, a gastropod-borne helminthic infection, is increasingly being described in North America and is now reported in many European countries. In dogs, Angiostrongylus vasorum may cause a wide spectrum of clinical signs. Respiratory distress such as coughing and dyspnoea are the most frequently described manifestations. The aim of the present study was to gain additional information on the distribution, prevalence and risk factors associated with A. vasorum infection in dog from southern Belgium through the combined used of a commercially available in-clinic assay for detection of circulating antigen (Angio Detect, IDEXX, Westbrook, USA) and coprology in two different canine populations: dogs with clinical signs compatible with angiostrongylosis and asymptomatic dogs or dogs presented for unrelated conditions (control). RESULTS: A total of 979 dogs were enrolled in the study from November 2014 until February 2016. Seven hundred fifty-seven dogs were included in the control group, whereas 222 dogs had clinical signs compatible with angiostrongylosis. Forty-six dogs out of 979 (4.7 %) had A. vasorum circulating antigen. There was a highly significant difference between the two populations (3.6 % (27/747) and 8.6 % (19/222) in control and symptomatic dogs, respectively) (P = 0.00379). First stage larvae (L1) of A. vasorum were found in seven out of 24 serologically positive control dogs and in six out of 17 serologically positive symptomatic dogs. Interestingly, L1 of Crenosoma vulpis were detected by Baermann technique in one control and nine symptomatic dogs, respectively. Out of 17 Angio Detect (IDEXX, Westbrook, USA) positive dogs with negative (14) or not performed Baermann test (three), one dog was positive in both in-house ELISAs (Ag and Ab) and one dog was positive for Ag. Statistical analysis was unable to detect any risk factors associated with the direct and/or indirect detection of A. vasorum. CONCLUSIONS: This seroepidemiological study demonstrated for the first time a high seroprevalence in Southern Belgium for A. vasorum. The Angio Detect was found to be suitable in this context as the collection, preservation and examination of stools were difficult. Nevertheless, discrepancies were observed between the different available tests. Additional research is clearly needed. Also, coproscopy remains a very useful tool in dogs infected for less than nine weeks and for the identification of other canine lung nematodes such as C. vulpis. This study also demonstrates that asymptomatic dogs may shed A. vasorum L1 in their faeces and therefore contribute to the maintenance of A. vasorum life-cycle. [less ▲]

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See detailDetection of Angiostrongylus vasorum by quantitative PCR in bronchoalveolar lavage fluid in Belgian dogs
Canonne-Guibert, Morgane ULiege; Roels, Elodie ULiege; Caron, Yannick ULiege et al

in Journal of Small Animal Practice (2016), 57(3),

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