13 results on '"Scheid, Bethsabée"'
Search Results
2. Modelling the monthly abundance of Culicoides biting midges in nine European countries using Random Forests machine learning
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Cuéllar, Ana Carolina, Kjær, Lene Jung, Baum, Andreas, Stockmarr, Anders, Skovgard, Henrik, Nielsen, Søren Achim, Andersson, Mats Gunnar, Lindström, Anders, Chirico, Jan, Lühken, Renke, Steinke, Sonja, Kiel, Ellen, Gethmann, Jörn, Conraths, Franz J., Larska, Magdalena, Smreczak, Marcin, Orłowska, Anna, Hamnes, Inger, Sviland, Ståle, Hopp, Petter, Brugger, Katharina, Rubel, Franz, Balenghien, Thomas, Garros, Claire, Rakotoarivony, Ignace, Allène, Xavier, Lhoir, Jonathan, Chavernac, David, Delécolle, Jean-Claude, Mathieu, Bruno, Delécolle, Delphine, Setier-Rio, Marie-Laure, Scheid, Bethsabée, Chueca, Miguel Ángel Miranda, Barceló, Carlos, Lucientes, Javier, Estrada, Rosa, Mathis, Alexander, Venail, Roger, Tack, Wesley, and Bødker, Rene
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- 2020
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3. Monthly variation in the probability of presence of adult Culicoides populations in nine European countries and the implications for targeted surveillance
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Cuéllar, Ana Carolina, Jung Kjær, Lene, Baum, Andreas, Stockmarr, Anders, Skovgard, Henrik, Nielsen, Søren Achim, Andersson, Mats Gunnar, Lindström, Anders, Chirico, Jan, Lühken, Renke, Steinke, Sonja, Kiel, Ellen, Gethmann, Jörn, Conraths, Franz J., Larska, Magdalena, Smreczak, Marcin, Orłowska, Anna, Hamnes, Inger, Sviland, Ståle, Hopp, Petter, Brugger, Katharina, Rubel, Franz, Balenghien, Thomas, Garros, Claire, Rakotoarivony, Ignace, Allène, Xavier, Lhoir, Jonathan, Chavernac, David, Delécolle, Jean-Claude, Mathieu, Bruno, Delécolle, Delphine, Setier-Rio, Marie-Laure, Venail, Roger, Scheid, Bethsabée, Chueca, Miguel Ángel Miranda, Barceló, Carlos, Lucientes, Javier, Estrada, Rosa, Mathis, Alexander, Tack, Wesley, and Bødker, René
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- 2018
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4. Spatial and temporal variation in the abundance of Culicoides biting midges (Diptera: Ceratopogonidae) in nine European countries
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Cuéllar, Ana Carolina, Kjær, Lene Jung, Kirkeby, Carsten, Skovgard, Henrik, Nielsen, Søren Achim, Stockmarr, Anders, Andersson, Gunnar, Lindstrom, Anders, Chirico, Jan, Lühken, Renke, Steinke, Sonja, Kiel, Ellen, Gethmann, Jörn, Conraths, Franz J., Larska, Magdalena, Hamnes, Inger, Sviland, Ståle, Hopp, Petter, Brugger, Katharina, Rubel, Franz, Balenghien, Thomas, Garros, Claire, Rakotoarivony, Ignace, Allène, Xavier, Lhoir, Jonathan, Chavernac, David, Delécolle, Jean-Claude, Mathieu, Bruno, Delécolle, Delphine, Setier-Rio, Marie-Laure, Venail, Roger, Scheid, Bethsabée, Chueca, Miguel Ángel Miranda, Barceló, Carlos, Lucientes, Javier, Estrada, Rosa, Mathis, Alexander, Tack, Wesley, and Bødker, Rene
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- 2018
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5. Experimental infections with Zika virus strains reveal high vector competence of Aedes albopictus and Aedes aegypti populations from Gabon (Central Africa) for the African virus lineage
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Jiolle, Davy, Moltini-Conclois, Isabelle, Obame-Nkoghe, Judicaël, Yangari, Patrick, Porciani, Angélique, Scheid, Bethsabée, Kengne, Pierre, Ayala, Diego, Failloux, Anna-Bella, Paupy, Christophe, Maladies infectieuses et vecteurs : écologie, génétique, évolution et contrôle (MIVEGEC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Centre International de Recherches Médicales de Franceville (CIRMF), Université des Sciences et Techniques de Masuku [Franceville, Gabon] (USTM), Arbovirus et Insectes Vecteurs - Arboviruses and Insect Vectors, Institut Pasteur [Paris], This work was supported by H2020 Research Infrastructures [grant number Infravec2, no. 731060], Horizon 2020 Framework Programme [grant number ZIKAlliance, no.734548], and Agence Nationale de la Recherche [grant number TIGERBRIDGE, no. ANR-16-CE35-0010-01]., The authors thank Marie Vazeille for standardizing the experimental protocols, Catherine Dauga for her help in viral sequence alignments and the EVAg© initiative for providing the viral strains., ANR-16-CE35-0010,TIGERBRIDGE,Invasion d'Ae. albopictus dans les écosystèmes forestiers d'Afrique Centrale et risque d'émergence de nouveaux virus zoonotiques(2016), European Project: 731060,INFRAVEC2(2017), European Project: 734548,ZIKAlliance(2016), Université des Sciences et Techniques de Masuku (USTM), and Institut Pasteur [Paris] (IP)
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Asia ,Zika Virus Infection ,[SDV]Life Sciences [q-bio] ,fungi ,Mosquito Vectors ,Viral Load ,Aedes albopictus ,Zika virus ,Aedes aegypti ,Aedes ,parasitic diseases ,African and Asian lineages ,Animals ,Gabon ,Saliva ,Africa South of the Sahara ,Research Article - Abstract
International audience; The two main Zika virus (ZIKV) vectors, Aedes albopictus and Aedes aegypti (invasive and native species, respectively), are present in Gabon (Central Africa). The aim of this study was to determine the entomological ZIKV risk associated with these mosquito species in Gabon by evaluating their vector competence for an African (i.e. representative of the endemic strains circulating in sub-Saharan Africa) and two Asian (i.e. representatives of exogenous epidemic strains that could be introduced) ZIKV strains. The transmission efficiency of one Ae. aegypti and two Ae. albopictus field-collected populations from Libreville and Franceville was assayed at day 7, 14 and 21 after experimental oral infection. The two mosquito species could transmit all three ZIKV strains already at day 7 post-infection, but transmission efficiency was higher for the African strain than the non-African strains (>60% versus
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- 2021
6. Mosquito densoviruses: the revival of a biological control agent against urban Aedes vectors of arboviruses
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Perrin, Aurélie, primary, Gosselin-Grenet, Anne-Sophie, additional, Rossignol, Marie, additional, Ginibre, Carole, additional, Scheid, Bethsabée, additional, Lagneau, Christophe, additional, Chandre, Fabrice, additional, Baldet, Thierry, additional, Ogliastro, Mylène, additional, and Bouyer, Jérémy, additional
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- 2020
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7. Vectopole Sud, Réseau Montpelliérain de plateformes pour la recherche sur les arthropodes d'intérêt médical, vétérinaire et agricole
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Deme, Isabelle, Baldet, Thierry, Chandre, Fabrice, Eychenne, M., Grucker, K., Huber, Karine, Lagneau, Christophe, Lefrançois, Thierry, Ravel, Sophie, Scheid, Bethsabée, Setier-Rio, Marie-Laure, Simard, Frédéric, Solano, Philippe, Trevennec, O., and Volkoff, N.
- Abstract
Six partenaires le CIRAD, le CNRS, l'EID Méditerranée, l'INRA, l'IRD, l'UM (Université de Montpellier), collaborent autour des problématiques liées aux arthropodes vecteurs de pathogènes responsables de maladies infectieuses humaines ou animales et aux ravageurs de cultures. Vectopole Sud est un réseau unique en Europe, regroupant à Montpellier de très nombreuses compétences autour de ses problématiques avec un dispositif d'environ 400 agents dont plus de 110 cadres de recherche permanents. Les Unités Mixtes de Recherche (UMR) ASTRE, DGIMI, MIVEGEC, INTERTRYP et l'EID-Méditerranée intégrées à ce réseau mènent des activités de recherche et de formation se situant à de multiples interfaces entre biologie et santé, écologie et environnement, évolution et médecine. La démarche du réseau Vectopole Sud est d'associer santé publique humaine, vétérinaire et végétale en 'Une seule Santé' ('One Health'). A cette fin, Vectopole Sud regroupe 4 plateformes d'expérimentation, insectariums confinés et laboratoires associés, sur les arthropodes vecteurs et ravageurs, réparties sur 4 sites de l'agglomération Montpelliéraine : - La plateforme Vectopole du site de la Valette (Campus de l'IRD – UMR Mivegec, IRD/UM/CNRS), disposant de compétences en matière de recherche sur les vecteurs et les pathogènes d'importance médicale ; -la plateforme du site de Baillarguet (Campus du CIRAD – UMR ASTRE, CIRAD/INRA), disposant de compétences en matière de recherche sur les vecteurs et les pathogènes d'importance vétérinaire ; -la plateforme du site de Triolet (PIQ – Plateforme d'Insectes de Quarantaine, campus de l'UM – UMR DGIMI, UM/INRA), disposant de compétences en matière de recherche sur les insectes d'intérêt agronomique ; -la plateforme de l'EID Méditerranée, opérateur public de démoustication, développant des méthodes et outils de lutte innovants contre les moustiques nuisants et vecteurs potentiels de maladies infectieuses.
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- 2018
8. Vectopole Sud, a French Network of platforms for research in medical, veterinary and agricultural entomology
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Baldet, Thierry, Chandre, Fabrice, Deme, Isabelle, Eychenne, M., Grucker, K., Huber, Karine, Lagneau, Christophe, Lefrançois, Thierry, Ravel, Sophie, Scheid, Bethsabée, Setier Rio, Marie-Laure, Simard, Frédéric, Solano, Philippe, Trevennec, O., Volkoff, N., Baldet, Thierry, Chandre, Fabrice, Deme, Isabelle, Eychenne, M., Grucker, K., Huber, Karine, Lagneau, Christophe, Lefrançois, Thierry, Ravel, Sophie, Scheid, Bethsabée, Setier Rio, Marie-Laure, Simard, Frédéric, Solano, Philippe, Trevennec, O., and Volkoff, N.
- Abstract
Six institutional partners, CIRAD, CNRS, EID Méditerranée, INRA, IRD and the Univer-sity of Montpellier have been working together since 2010 on the issue of arthropod vectors of pathogens that cause infectious diseases in humans and animals, and insect pests responsible for damages to crops. This collaboration for over 8 years has resulted in the creation of “Vectopole Sud”, a Montpellier network of platforms dedicated to re-searches on arthropods of medical, veterinary and agricultural importance. The network draws from the infrastructure and expertise of each partner to improve early warning systems, monitoring, control of pests and vectors in order to protect hu-man health, agriculture and livestock production. The network has received continuous funding by the French Government and the Occitanie Region enabling it to modernize its different laboratories and rearing facilities and support the research activities. Vectopole Sud includes four experimental platforms, confined insectariums and associ-ated laboratories, which are open to national and international partners. Overall, the Vec-topole Sud has a network of partners in Europe and tropical regions worldwide, notably through IRD and CIRAD, two French institutions supporting research for development. Vectopole Sud brings together over 400 researchers and technicians from five research units belonging to the Montpellier University of Excellence and Agropolis International scientific communities. It conducts multidisciplinary research and expertise on biolo-gy, public & animal health, ecology, environmental science, genetics, and evolutionary medicine. It contributes to a better environment, animal health and human wellbeing through an integrated One Health approach, by fighting human and animal diseases to ensure more productive and sustainable farming systems (food security). We will present the different platforms of the Vectopole Sud network, its various activi-ties (infrastructures, research, services and
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- 2018
9. Abundance and seasonality of biting midges at a continental scale in Europe. [P2 6]
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Cuéllar, Ana Carolina, Kjær, Lene Jung, Skovgaard, Henrik, Nielsen, Soren Achim, Stockmarr, Anders, Anderson, G., Lindstrom, Anders, Chirico, Jan, Lühken, Renke, Steinke, Sonja, Kiel, Ellen, Larska, Magdalena, Hamnes, Inger, Sviland, Stale, Hopp, Petter, Brugger, Katharina, Rubel, Franz, Balenghien, Thomas, Garros, Claire, Rakotoarivony, Ignace, Allene, Xavier, Lhoir, Jonathan, Delecolle, Jean Claude, Mathieu, Bernard, Delecolle, Delphine, Setier-Rio, Marie-Laure, Venail, Roger, Scheid, Bethsabée, Miranda-Chueca, Miguel Angel, Barcelo, Carlos, Lucientes, Javier, Estrada, Rosa, Tack, Wesley, Mathis, Alexander, and Bodker, René
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L73 - Maladies des animaux ,L72 - Organismes nuisibles des animaux - Abstract
Background: Culicoides biting midges are hematophagous insects of veterinary importance able to transmit viruses such as bluetongue virus and Schmallenberg virus to livestock. The aim of this work was to describe the average temporal abundance of biting midges at a continental scale, by comparing the seasonal variation at six different latitude ranges from southern Spain to northern Sweden. Materials and methods: We gathered Culicoides obsoletus group trap data collected by national surveillance programs in nine European countries (Spain, France Germany, Switzerland, Austria, Denmark, Sweden, Norway, Poland) from 2007-2013. In total, 904 farms were sampled for Culicoides midges using UV light traps. We divided Europe into 6 latitudinal bands of 5° width and calculated the average weekly midge abundance as well as the average annual cumulative sum of biting midges for each of these bands. We plotted the results to visualize the spatial and temporal patterns at a continental scale. Results: The midge season began earlier in southern Europe (week 10) compared to northern latitudes (week 19). The season also lasted longer at southern latitudes and became progressively shorter towards the northern latitudes. Abundance peaks occurred during spring and summer at all six latitudinal ranges. Despite the steadily shorter vector season in the north of Europe, the annual cumulative sum of biting midges increased towards the north. Norway and Sweden with the shortest vector periods, had the highest number of the C. obsoletus group, reaching a cumulative sum of 455.000 midges on average annually, with some traps collecting more than 110.000 in one night. Discussion: Temperature drives the start and length of the midge season at different latitudes, but it does not seem to drive the increasing abundance towards the north. A possible explanation could be that midge abundance may be more related to breeding site availability and soil moisture than temperature. Conclusion: This is the first time quantitative seasonal abundances for biting midges have been aggregated and jointly analyzed for the whole of Western Europe. By ignoring the fine scale variation in abundance between farms and regions, we have isolated and quantified an overall south-north trend in the temporal abundance of biting midges. These results may facilitate decision making by e.g. the EU member states when objectives and joint decisions are needed for prevention and control of midge-borne infections on a continental scale.
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- 2017
10. How do species, population and active ingredient influence insecticide susceptibility in Culicoides biting midges (Diptera: Ceratopogonidae) of veterinary importance?
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Venail, Roger, Lhoir, Jonathan, Fall, Moussa, Del Rio, R., Talavera, Sandra, Labuschagne, M., Miranda, Miguel, Pagès, Nonito, Venter, Gert J., Rakotoarivony, Ignace, Allene, Xavier, Scheid, Bethsabée, Gardes, Laëtitia, Gimonneau, Geoffrey, Lancelot, Renaud, Garros, Claire, Cetre-Sossah, Catherine, Balenghien, Thomas, Carpenter, Simon, Baldet, Thierry, Venail, Roger, Lhoir, Jonathan, Fall, Moussa, Del Rio, R., Talavera, Sandra, Labuschagne, M., Miranda, Miguel, Pagès, Nonito, Venter, Gert J., Rakotoarivony, Ignace, Allene, Xavier, Scheid, Bethsabée, Gardes, Laëtitia, Gimonneau, Geoffrey, Lancelot, Renaud, Garros, Claire, Cetre-Sossah, Catherine, Balenghien, Thomas, Carpenter, Simon, and Baldet, Thierry
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Background Culicoides biting midges are biological vectors of internationally important arboviruses of livestock and equines. Insecticides are often employed against Culicoides as a part of vector control measures, but systematic assessments of their efficacy have rarely been attempted. The objective of the present study is to determine baseline susceptibility of multiple Culicoides vector species and populations in Europe and Africa to the most commonly used insecticide active ingredients. Six active ingredients are tested: three that are based on synthetic pyrethroids (alpha-cypermethrin, deltamethrin and permethrin) and three on organophosphates (phoxim, diazinon and chlorpyrifos-methyl). Methods Susceptibility tests were conducted on 29,064 field-collected individuals of Culicoides obsoletus Meigen, Culicoides imicola Kieffer and a laboratory-reared Culicoides nubeculosus Meigen strain using a modified World Health Organization assay. Populations of Culicoides were tested from seven locations in four different countries (France, Spain, Senegal and South Africa) and at least four concentrations of laboratory grade active ingredients were assessed for each population. Results The study revealed that insecticide susceptibility varied at both a species and population level, but that broad conclusions could be drawn regarding the efficacy of active ingredients. Synthetic pyrethroid insecticides were found to inflict greater mortality than organophosphate active ingredients and the colony strain of C. nubeculosus was significantly more susceptible than field populations. Among the synthetic pyrethroids, deltamethrin was found to be the most toxic active ingredient for all species and populations. Conclusions The data presented represent the first parallel and systematic assessment of Culicoides insecticide susceptibility across several countries. As such, they are an important baseline reference to monitor the susceptibility status of Culicoides to current insecticide
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- 2015
11. L'activité des populations de Culicoides en 2012 et bilan des quatre années du dispositif de surveillance
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Balenghien, Thomas, Delecolle, Jean Claude, Setier-Rio, Marie-Laure, Delecolle, Delphine, Allene, Xavier, Rakotoarivony, Ignace, Scheid, Bethsabée, Mathieu, Bruno, Chavernac, David, Perrin, Jean-Baptiste, Baldet, Thierry, and Garros, Claire
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Cartographie ,Distribution géographique ,Culicoides ,L73 - Maladies des animaux ,Virus bluetongue ,Vecteur de maladie ,Cycle de développement ,Dynamique des populations ,Surveillance épidémiologique ,Fièvre catarrhale du mouton ,L72 - Organismes nuisibles des animaux ,Piégeage des animaux - Abstract
Un réseau de surveillance entomologique (160 pièges) des populations de Culicoides a été en activité entre 2009 et 2012 en France continentale suite à la transmission du virus de la fièvre catarrhale ovine (FCO). Nous présentons ici la diversité et la dynamique des Culicoides sur l'ensemble du territoire en 2012 en regard des années précédentes. L'accent est mis sur les cartes de période d'inactivité vectorielle synthétisant les résultats 2009-2012.
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- 2013
12. How do species, population and active ingredient influence insecticide susceptibility in Culicoides biting midges (Diptera: Ceratopogonidae) of veterinary importance?
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Venail, Roger, primary, Lhoir, Jonathan, additional, Fall, Moussa, additional, del Río, Ricardo, additional, Talavera, Sandra, additional, Labuschagne, Karien, additional, Miranda, Miguel, additional, Pagès, Nonito, additional, Venter, Gert, additional, Rakotoarivony, Ignace, additional, Allène, Xavier, additional, Scheid, Bethsabée, additional, Gardès, Laëtitia, additional, Gimonneau, Geoffrey, additional, Lancelot, Renaud, additional, Garros, Claire, additional, Cêtre-Sossah, Catherine, additional, Balenghien, Thomas, additional, Carpenter, Simon, additional, and Baldet, Thierry, additional
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- 2015
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13. Experimental infections with Zika virus strains reveal high vector competence of Aedes albopictus and Aedes aegypti populations from Gabon (Central Africa) for the African virus lineage.
- Author
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Jiolle D, Moltini-Conclois I, Obame-Nkoghe J, Yangari P, Porciani A, Scheid B, Kengne P, Ayala D, Failloux AB, and Paupy C
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- Africa South of the Sahara, Animals, Asia, Gabon, Saliva virology, Viral Load, Zika Virus Infection virology, Aedes virology, Mosquito Vectors virology, Zika Virus physiology, Zika Virus Infection transmission
- Abstract
ABSTRACT The two main Zika virus (ZIKV) vectors, Aedes albopictus and Aedes aegypti (invasive and native species, respectively), are present in Gabon (Central Africa). The aim of this study was to determine the entomological ZIKV risk associated with these mosquito species in Gabon by evaluating their vector competence for an African (i.e. representative of the endemic strains circulating in sub-Saharan Africa) and two Asian (i.e. representatives of exogenous epidemic strains that could be introduced) ZIKV strains. The transmission efficiency of one Ae. aegypti and two Ae. albopictus field-collected populations from Libreville and Franceville was assayed at day 7, 14 and 21 after experimental oral infection. The two mosquito species could transmit all three ZIKV strains already at day 7 post-infection, but transmission efficiency was higher for the African strain than the non-African strains (>60% versus <14%; incubation period of 14-21 days). The two mosquito species exhibited comparable vector competence for ZIKV, although the amount of viral particles (African strain) in saliva was significantly higher in Ae. albopictus than Ae. aegypti at day 14 post-infection. These findings suggest that overall, ZIKV risk in Gabon is mainly related to virus strains that circulate endemically across sub-Saharan Africa, although the transmission of non-African strains remain possible in case of introduction. Due to its high infestation indexes and ecological/geographical ranges, this risk appears mainly associated with Ae. albopictus . Vector surveillance and control methods against this invasive mosquito must be strengthened in the region to limit the risk of future outbreaks.
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- 2021
- Full Text
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