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1. Quantitative analysis of transmission parameters for bluetongue virus serotype 8 in Western Europe in 2006

Author

de Koeijer Aline A, Boender Gert, Nodelijk Gonnie, Staubach Christoph, Meroc Estelle, and Elbers Armin RW

Subjects
Veterinary medicine, SF600-1100
Abstract

Abstract The recent bluetongue virus serotype 8 (BTV-8) epidemic in Western Europe struck hard. Controlling the infection was difficult and a good and safe vaccine was not available until the spring of 2008. Little was known regarding BTV transmission in Western Europe or the efficacy of control measures. Quantitative details on transmission are essential to assess the potential and efficacy of such measures. To quantify virus transmission between herds, a temporal and a spatio-temporal analysis were applied to data on reported infected herds in 2006. We calculated the basic reproduction number between herds (Rh: expected number of new infections, generated by one initial infected herd in a susceptible environment). It was found to be of the same order of magnitude as that of an infection with Foot and Mouth Disease (FMD) in The Netherlands, e.g. around 4. We concluded that an average day temperature of at least 15°C is required for BTV-8 transmission between herds in Western Europe. A few degrees increase in temperature is found to lead to a major increase in BTV-8 transmission. We also found that the applied disease control (spatial zones based on 20 km radius restricting animal transport to outside regions) led to a spatial transmission pattern of BTV-8, with 85% of transmission restricted to a 20 km range. This 20 km equals the scale of the protection zones. We concluded that free animal movement led to substantial faster spread of the BTV-8 epidemic over space as compared to a situation with animal movement restrictions.

Published
2011
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4. Economic Burden of Adults Hospitalized with Respiratory Syncytial Virus Infection in Spain, 2016–2019

Author

Haeberer, Mariana, primary, de Aldecoa, Alejandra López-Ibáñez, additional, Seabroke, Suzie, additional, Ramirez Agudelo, Juan Luis, additional, Mora, Laura, additional, Saravia, Laura, additional, Peerawaranun, Pimnara, additional, Meroc, Estelle, additional, Aponte Torres, Zuleika, additional, Law, Amy, additional, and Sato, Reiko, additional

Published
2024
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5. Extensive literature review on vectors and reservoirs of AHL‐listed pathogens of crustaceans

Author

European Food Safety Authority (efsa), Kero, Linnea Lindgren, Alemu, Selam, Alvarez, Julio, Arzul, Isabelle, Aznar, Inma, Caumette, Elea Bailly, Bicout, Dominique, Drewe, Julian Ashley, Dharmaveer, Shetty, Bastuji, Bruno Garin, Kohnle, Lisa, Meroc, Estelle, Chueca, Miguel Ángel Miranda, Olesen, Niels Jørgen, Roberts, Helen, Nielsen, Søren Saxmose, Schiøtt, Morten, Sindre, Helen, Stone, David, Rusina, Alessia, Vendramin, Niccolo, Dhollander, Sofie, European Food Safety Authority (efsa), Kero, Linnea Lindgren, Alemu, Selam, Alvarez, Julio, Arzul, Isabelle, Aznar, Inma, Caumette, Elea Bailly, Bicout, Dominique, Drewe, Julian Ashley, Dharmaveer, Shetty, Bastuji, Bruno Garin, Kohnle, Lisa, Meroc, Estelle, Chueca, Miguel Ángel Miranda, Olesen, Niels Jørgen, Roberts, Helen, Nielsen, Søren Saxmose, Schiøtt, Morten, Sindre, Helen, Stone, David, Rusina, Alessia, Vendramin, Niccolo, and Dhollander, Sofie

Abstract

On request of the EU Commission, EFSA carried out an Extensive Literature Review (ELR) to provide a list of vector species or reservoirs species of pathogens of crustaceans, listed in Annex II to the AHL, aiming to update the Annex of Implementing Regulation (EU) 2018/1882. In this Technical Report, the detailed review protocol of the ELR and assessment of potential vector and reservoir species is described of the crustacean pathogens listed in Annex II to the AHL: Taura syndrome virus (TSV), Yellow head virus (YHV) or White spot syndrome virus (WSSV). In total 2,530 research publications were collected for abstract screening and from these, 110 were selected for further full text analysis. In the final data collection and assessment 34 relevant research publications were used for extracting information on vector and reservoir species of the above crustacean pathogens. The results for crustacean species for which scientific evidence indicates that a role as vector species or reservoir species is likely are presented as tables in the supplementary material of this report.

Published
2023
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11. Extensive literature review on vectors and reservoirs of AHL‐listed pathogens of crustaceans.

Author

Kero, Linnea Lindgren, Alemu, Selam, Alvarez, Julio, Arzul, Isabelle, Aznar, Inma, Caumette, Elea Bailly, Bicout, Dominique, Drewe, Julian Ashley, Dharmaveer, Shetty, Bastuji, Bruno Garin, Kohnle, Lisa, Meroc, Estelle, Chueca, Miguel Ángel Miranda, Olesen, Niels Jørgen, Roberts, Helen, Nielsen, Søren Saxmose, Schiøtt, Morten, Sindre, Helen, Stone, David, and Rusina, Alessia

Subjects
PATHOGENIC microorganisms
Abstract

On request of the EU Commission, EFSA carried out an Extensive Literature Review (ELR) to provide a list of vector species or reservoirs species of pathogens of crustaceans, listed in Annex II to the AHL, aiming to update the Annex of Implementing Regulation (EU) 2018/1882. In this Technical Report, the detailed review protocol of the ELR and assessment of potential vector and reservoir species is described of the crustacean pathogens listed in Annex II to the AHL: Taura syndrome virus (TSV), Yellow head virus (YHV) or White spot syndrome virus (WSSV). In total 2,530 research publications were collected for abstract screening and from these, 110 were selected for further full text analysis. In the final data collection and assessment 34 relevant research publications were used for extracting information on vector and reservoir species of the above crustacean pathogens. The results for crustacean species for which scientific evidence indicates that a role as vector species or reservoir species is likely are presented as tables in the supplementary material of this report. This publication is linked to the following EFSA Journal articles: http://onlinelibrary.wiley.com/doi/10.2903/j.efsa.2023.8172/full, http://onlinelibrary.wiley.com/doi/10.2903/j.efsa.2023.8173/full, http://onlinelibrary.wiley.com/doi/10.2903/j.efsa.2023.8174/full This publication is linked to the following EFSA Supporting Publications articles: http://onlinelibrary.wiley.com/doi/10.2903/sp.efsa.2023.EN-8123/full, http://onlinelibrary.wiley.com/doi/10.2903/sp.efsa.2023.EN-8124/full [ABSTRACT FROM AUTHOR]

Published
2023
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19. European data sources for computing burden of (potential) vaccine-preventable diseases in ageing adults

Author

Meroc, Estelle, Fröberg, J., Almasi, Timea, Winje, Brita Askeland, Orrico-Sanchez, Alejandro, Steens, Anneke, Bollaerts, Kaatje, Knol, Mirjam J., Meroc, Estelle, Fröberg, J., Almasi, Timea, Winje, Brita Askeland, Orrico-Sanchez, Alejandro, Steens, Anneke, Bollaerts, Kaatje, and Knol, Mirjam J.

Abstract

Contains fulltext : 233498.pdf (Publisher’s version ) (Open Access)

Published
2021

22. Immigration and adolescent health: the case of a multicultural population.

Author

Meroc, Estelle, Moreau, Nathalie, Lebacq, Thérésa, Dujeu, Maud, Pedroni, Camille, Godin, Isabelle, Castetbon, Katia, Meroc, Estelle, Moreau, Nathalie, Lebacq, Thérésa, Dujeu, Maud, Pedroni, Camille, Godin, Isabelle, and Castetbon, Katia

Abstract

Previous research indicates that the impact of immigration on health tends to be specific as it is influenced by many factors such as life stage and host country. The aim of this study was to examine the relationship between immigration and adolescent health within the multicultural context of the Brussels-Capital Region in Belgium., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2019

23. Feelings about the timing of first sexual intercourse and health-related quality of life among adolescents.

Author

Rouche, Manon, Castetbon, Katia, Dujeu, Maud, Meroc, Estelle, Lebacq, Thérésa, Pedroni, Camille, Senterre, Christelle, Godin, Isabelle, Moreau, Nathalie, Rouche, Manon, Castetbon, Katia, Dujeu, Maud, Meroc, Estelle, Lebacq, Thérésa, Pedroni, Camille, Senterre, Christelle, Godin, Isabelle, and Moreau, Nathalie

Abstract

Early sexual intercourse (SI) may have long-lasting negative impacts on health-related quality of life (HRQoL). So far, these impacts have been studied using age for defining early SI instead of feelings about its timing. The present study examined the association between feelings about the timing of first SI and current HRQoL., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2019

24. Environmental correlates of physical activity among children 10 to 13 years old in Wallonia (Belgium).

Author

Pedroni, Camille, Dujeu, Maud, Moreau, Nathalie, Lebacq, Thérésa, Meroc, Estelle, Godin, Isabelle, Castetbon, Katia, Pedroni, Camille, Dujeu, Maud, Moreau, Nathalie, Lebacq, Thérésa, Meroc, Estelle, Godin, Isabelle, and Castetbon, Katia

Abstract

In Belgium, as in many other countries, the juvenile practice of physical activity is insufficient. A growing attention has been paid to environmental factors that may influence physical activity but with inconsistent findings. This study aims to estimate the association between daily life environment characteristics and physical activity among children 10 to 13 years old in Wallonia (Belgium)., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2019

25. Sleeping patterns and association with health and school-related outcomes and behaviours among adolescents

Author

European Congress of Epidemiology (4-6 juillet 2018: Lyon, France), Meroc, Estelle, Moreau, Nathalie, Lebacq, Thérésa, Dujeu, Maud, Pedroni, Camille, Godin, Isabelle, Castetbon, Katia, European Congress of Epidemiology (4-6 juillet 2018: Lyon, France), Meroc, Estelle, Moreau, Nathalie, Lebacq, Thérésa, Dujeu, Maud, Pedroni, Camille, Godin, Isabelle, and Castetbon, Katia

Abstract

info:eu-repo/semantics/nonPublished

Published
2018

26. Association between body weight satisfaction and health-related quality of life differs according to dieting practices in adolescents

Author

European Association for Research on Adolescence (EARA) (12-15 September 2018: Ghent, Belgium), Moreau, Nathalie, Lebacq, Thérésa, Meroc, Estelle, Pedroni, Camille, Dujeu, Maud, Godin, Isabelle, Castetbon, Katia, European Association for Research on Adolescence (EARA) (12-15 September 2018: Ghent, Belgium), Moreau, Nathalie, Lebacq, Thérésa, Meroc, Estelle, Pedroni, Camille, Dujeu, Maud, Godin, Isabelle, and Castetbon, Katia

Abstract

info:eu-repo/semantics/nonPublished

Published
2018

27. Sociodemographic correlates of early alcohol consumption among adolescents from two different socio-cultural context in Belgium

Author

European Congress of Epidemiology (4-6 juillet 2018: Lyon, France), Pedroni, Camille, Dujeu, Maud, Lebacq, Thérésa, Moreau, Nathalie, Meroc, Estelle, Godin, Isabelle, Castetbon, Katia, European Congress of Epidemiology (4-6 juillet 2018: Lyon, France), Pedroni, Camille, Dujeu, Maud, Lebacq, Thérésa, Moreau, Nathalie, Meroc, Estelle, Godin, Isabelle, and Castetbon, Katia

Abstract

info:eu-repo/semantics/nonPublished

Published
2018

28. School-related social support does not moderate the association between body mass index and health-related quality of life

Author

Conference of the European Association for Research on Adolescence (16th: 2018-09-15: Ghent, Belgium), Lebacq, Thérésa, Dujeu, Maud, Meroc, Estelle, Moreau, Nathalie, Pedroni, Camille, Godin, Isabelle, Castetbon, Katia, Conference of the European Association for Research on Adolescence (16th: 2018-09-15: Ghent, Belgium), Lebacq, Thérésa, Dujeu, Maud, Meroc, Estelle, Moreau, Nathalie, Pedroni, Camille, Godin, Isabelle, and Castetbon, Katia

Abstract

info:eu-repo/semantics/nonPublished

Published
2018

29. A pan-European epidemiological study reveals honey bee colony survival depends on beekeeper education and disease control

Author

Jacques, Antoine, Laurent, Marion, Ribiere-Chabert, Magali, Saussac, Mathilde, Bougeard, Stephanie, Budge, Giles E, Hendrikx, Pascal, Chauzat, Marie-Pierre, de Graaf, Dirk, Meroc, Estelle, Nguyen, Bach Kim, Roelandt, Stefan, Roels, Stefan, Van der Stede, Yves, Tonnersen, Tina, Kryger, Per, Jaarma, Kart, Kuus, Merle, Raie, Arvi, Heinikainen, Sirpa, Pelkonen, Sinikka, Vahanikkila, Nella, Andrieux, Christophe, Ballis, Alexis, Barrieu, Guy, Bendali, Fatah, Brugoux, Corinne, Franco, Stephanie, Fuentes, Anne-Marie, Joel, Alain, Layec, Yves, Lopez, Jacqueline, Lozach, Andre, Malherbe, Duluc Laure, Mariau, Viviane, Meziani, Faycal, Monod, Denis, Mutel, Sebastien, Oesterle, Eric, Orlowski, Muriel, Petit, Manuel, Pillu, Patricia, Poret, Florence, Viry, Alain, Berg, Stefan, Buechler, Ralph, de Craigher, Doris, Genersch, Elke, Kaatz, Hans-Hinrich, Meixner, Marina D, von der Ohe, Werner, Otten, Christoph, Rosenkranz, Peter, Schaefer, Marc O, Schroeder, Annette, Agianiotaki, Eirini, Arfara, Stamatia, Boutsini, Sofia, Giannoulopoulou, Marianthi, Hondrou, Varvara, Karipidou, Sonia, Katsaros, Dimitrios, Katzagiannakis, Aristomenis, Kiriakopoulos, Antonios, Oureilidis, Konstantinos, Panteli, Aspasia, Pantoleon, Fotis, Papagianni, Zoi, Papalexiou, Eleni, Perdikaris, Socrates, Prapas, Athanasios, Siana, Panagiota, Skandalakis, Ioannis, Stougiou, Despoina, Tomazinakis, Ioannis, Tsali, Eleftheria, Tseliou, Evgenia, Tsiplakidis, Achillefs, Tsompanellis, Efstratios, Vamvakas, Giorgos, Varvarouta, Vasiliki, Vourvidis, Dimitris, Dan, Adam, Daroczi, Gyongyi, Lang, Maria, Papp, Melitta, Paulus, Petra-Deakne, Pupp, Eszter, Szalo, Marta, Toth, Adam, Zseli, Szilvia, Bressan, Gianluigi, Cerrone, Anna, Formato, Giovanni, Granato, Anna, Lavazza, Antonio, Macellari, Piero, Marcello, Paola, Ghittino, Claudio, Maroni, Ponti Andrea, Possidente, Rosaria, Mutinelli, Franco, Nassuato, Claudia, Pintore, Antonio, Ricchiuti, Luciano, Ruocco, Luigi, Salvaggio, Antonio, Troiano, Pasquale, Voltini, Barbara, Avsejenko, Jelena, Ciekure, Elina, Deksne, Gunita, Eglite, Ineta, Granta, Rita, Olsevski, Edvins, Rodze, Ieva, Stinka, Madara, Sirutkaityte, Rasa, Siriukaitis, Sigitas, Bober, Andrzej, Jazdzewski, Krzysztof, Pohorecka, Krystyna, Skubida, Marta, Zdanska, Dagmara, Amador, Maria Rita Ramos, Freitas, Susana, Quintans, Sofia, Santos, Patricia Tavares, Brezinova, Nicole, Brtkova, Andrea, Cuvalova, Zuzana, Filipova, Miriam, Jurovcikova, Julia, Kantikova, Miriam, Kubicova, Zuzana, Papiernikova, Erika, Sulejova, Lucia, Toporcak, Juraj, Ares, Cenador Carmen Maria, Ariza, Javier, Berna, Serna Nieves, Cabeza, Nunez Amparo, Casasempere, Cascales Jorge, Cid, Gonzalez Carlos, Corzan, Ripoll Jose Manuel, De Abajo, Domingo Miguel Angel, Diaz, Rey Roberto, Esteban, Royo Angel, Fernandez, Somalo Pilar, Garcia, Pascualvaca Alejandra, Gonzalez, Brena Carlos, Minguez, Gonzalez Olga, Onate, Maria Luisa, Oteiza, Orradre Pedro, Perez, Cobo Iratxe, Plaza, Perez Margarita, Puy, Pitarque D. Juan Ramon, Riol, Guinea Ruben, Romero, Gonzalez Luis Jose, Soldevilla, Yanguas Jose Fernando, Soler i Barrasus, Merce, Soriano, Gonzalez Mario, Vigo, Lopez Virginia, Villarta, Rivas Jose Luis, Fabricius-Kristiansen, Lotta, Forsgren, Eva, Brown, Mike, Budge, Giles, Grant, Ruth, Marris, Gay, Powell, Michelle, Wattam, Andy, Whiting, Ilex, Cauquil, Laura, Riviere, Marie-Pierre, and Garin, Emmanuel

Subjects
0106 biological sciences, honey bees, Beekeeping, Veterinary medicine, veterinary diseases, lcsh:Medicine, 01 natural sciences, POLLINATORS, Pollinator, Risk Factors, Animal Products, Medicine and Health Sciences, Medicine, Cluster Analysis, Poisson Distribution, autumn, lcsh:Science, Socioeconomics, LOSSES, Multidisciplinary, biology, Mortality rate, Agriculture, Honey, Bees, Europe, Insects, Veterinary Diseases, Livestock, Varroa, Seasons, Honey Bees, Agrochemicals, Research Article, Apiary, Arthropoda, Death Rates, Parasitic Diseases, Animal, Varroidae, honey, 010603 evolutionary biology, Autumn, Animal mortality, Animals, Pesticides, Demography, Nutrition, business.industry, lcsh:R, fungi, Winter, Organisms, Biology and Life Sciences, Honey bee, pesticides, biology.organism_classification, death rates, winter, Invertebrates, Hymenoptera, Diet, livestock, 010602 entomology, Food, People and Places, Earth Sciences, lcsh:Q, Veterinary Science, Pest Control, business
Abstract

Reports of honey bee population decline has spurred many national efforts to understand the extent of the problem and to identify causative or associated factors. However, our collective understanding of the factors has been hampered by a lack of joined up trans-national effort. Moreover, the impacts of beekeeper knowledge and beekeeping management practices have often been overlooked, despite honey bees being a managed pollinator. Here, we established a standardised active monitoring network for 5 798 apiaries over two consecutive years to quantify honey bee colony mortality across 17 European countries. Our data demonstrate that overwinter losses ranged between 2% and 32%, and that high summer losses were likely to follow high winter losses. Multivariate Poisson regression models revealed that hobbyist beekeepers with small apiaries and little experience in beekeeping had double the winter mortality rate when compared to professional beekeepers. Furthermore, honey bees kept by professional beekeepers never showed signs of disease, unlike apiaries from hobbyist beekeepers that had symptoms of bacterial infection and heavy Varroa infestation. Our data highlight beekeeper background and apicultural practices as major drivers of honey bee colony losses. The benefits of conducting trans-national monitoring schemes and improving beekeeper training are discussed.

Published
2016
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36. Comportements, bien-être et santé selon le statut migratoire des adolescents scolarisés en Région Bruxelles-Capitale. Enquête HBSC 2014: Service d’Information, Promotion, Education Santé

Author

Meroc, Estelle, Moreau, Nathalie, Dujeu, Maud, Lebacq, Thérésa, Pedroni, Camille, Godin, Isabelle, Castetbon, Katia, Meroc, Estelle, Moreau, Nathalie, Dujeu, Maud, Lebacq, Thérésa, Pedroni, Camille, Godin, Isabelle, and Castetbon, Katia

Abstract

info:eu-repo/semantics/published

Published
2017

37. Migration status and health and behaviours in children schooled in Brussels

Author

19th Congress of the European Union for School and University Health and Medicine (EUSUHM 2017) (September 6 – 8, 2017: Leuven, Belgium), Meroc, Estelle, Lebacq, Thérésa, Moreau, Nathalie, Dujeu, Maud, Pedroni, Camille, Godin, Isabelle, Castetbon, Katia, 19th Congress of the European Union for School and University Health and Medicine (EUSUHM 2017) (September 6 – 8, 2017: Leuven, Belgium), Meroc, Estelle, Lebacq, Thérésa, Moreau, Nathalie, Dujeu, Maud, Pedroni, Camille, Godin, Isabelle, and Castetbon, Katia

Abstract

info:eu-repo/semantics/nonPublished

Published
2017

38. Facteurs environnementaux associés à l’activité physique chez des jeunes de 11 à 13 ans en Wallonie

Author

2e congrès ADELF-SFSP (4-6 octobre 2017: Amiens, France), Pedroni, Camille, Dujeu, Maud, Moreau, Nathalie, Lebacq, Thérésa, Meroc, Estelle, Godin, Isabelle, 2e congrès ADELF-SFSP (4-6 octobre 2017: Amiens, France), Pedroni, Camille, Dujeu, Maud, Moreau, Nathalie, Lebacq, Thérésa, Meroc, Estelle, and Godin, Isabelle

Abstract

info:eu-repo/semantics/nonPublished

Published
2017

39. Health Behaviour in School-aged Children survey in French-speaking Belgium: what is changing between primary and secondary school?

Author

19th Congress of the European Union for School and University Health and Medicine (EUSUHM 2017) (September 6 – 8, 2017: Leuven, Belgium), Lebacq, Thérésa, Meroc, Estelle, Moreau, Nathalie, Dujeu, Maud, Pedroni, Camille, Godin, Isabelle, Castetbon, Katia, 19th Congress of the European Union for School and University Health and Medicine (EUSUHM 2017) (September 6 – 8, 2017: Leuven, Belgium), Lebacq, Thérésa, Meroc, Estelle, Moreau, Nathalie, Dujeu, Maud, Pedroni, Camille, Godin, Isabelle, and Castetbon, Katia

Abstract

info:eu-repo/semantics/nonPublished

Published
2017

40. Configurations familiales et consommation de tabac et d'alcool chez les adolescents en Belgique francophone

Author

2e congrès ADELF-SFSP (4-6 octobre 2017: Amiens, France), Dujeu, Maud, Pedroni, Camille, Lebacq, Thérésa, Moreau, Nathalie, Meroc, Estelle, Godin, Isabelle, Castetbon, Katia, 2e congrès ADELF-SFSP (4-6 octobre 2017: Amiens, France), Dujeu, Maud, Pedroni, Camille, Lebacq, Thérésa, Moreau, Nathalie, Meroc, Estelle, Godin, Isabelle, and Castetbon, Katia

Abstract

info:eu-repo/semantics/nonPublished

Published
2017

41. Inégalités sociales de santé chez les jeunes Belges en 2014

Author

2e congrès ADELF-SFSP (4-6 octobre 2017: Amiens, France), Fele, Dalia, Moreau, Nathalie, Dujeu, Maud, Lebacq, Thérésa, Pedroni, Camille, Meroc, Estelle, Godin, Isabelle, Castetbon, Katia, 2e congrès ADELF-SFSP (4-6 octobre 2017: Amiens, France), Fele, Dalia, Moreau, Nathalie, Dujeu, Maud, Lebacq, Thérésa, Pedroni, Camille, Meroc, Estelle, Godin, Isabelle, and Castetbon, Katia

Abstract

info:eu-repo/semantics/nonPublished

Published
2017

42. Spatial BTV-8 transmission in NW-Europe in 2007

Author

Boender, Gerrit, Hagenaars, Thomas J., Elbers, Armin R.W., Gethmann, Jörn M., Meroc, Estelle, Guis, Hélène, and De Koeijer, Aline A.

Subjects
U10 - Méthodes mathématiques et statistiques, L73 - Maladies des animaux
Abstract

Australia experienced its first ever outbreak of equine influenza in 2007, affecting around 70,000 horses before eradication was achieved, 5 months later. We developed a spatial simulation model of equine influenza in Australia parameterised by Bayesian inference of data from the 2007 outbreak. Our modelling objectives were to improve understanding of the underlying disease process and the effectiveness of certain control measures, and to develop a real-time decision-support tool for future outbreaks. Local spatial spread, the movement of infected horses and intra-premises transmission were explicitly modelled. A Bayesian reversible jump Markov chain Monte Carlo algorithm was used to infer posterior distributions of key epidemiological parameters for a peri-urban and a rural cluster (n=7,670 and 1,540 horse premises, respectively). We then conducted forward simulation, a sensitivity analysis and validated against a previous simulation model of the 2007 outbreak. The simulated epidemics were highly cross-correlated both temporally and spatially with the actual epidemic (Spearman's ?=0.81 and 0.88, respectively) and with outputs of the previous model (?=0.84 and 0.92). Spread dynamics differed markedly in the two clusters, with local spread occurring over longer distances but at a lower rate in the rural cluster. The duration of infectivity was established for premises holding a range of numbers of horses and the effectiveness of vaccination was assessed. Our posterior parameter distributions will provide informative priors for future real-time modelling of equine influenza outbreaks in Australia, and our findings suggest which outbreak control procedures to prioritise. This research was funded by the RIRDC and the ABCRC. (Texte intégral)

Published
2012

45. Bluetongue virus serotype 8 epidemic in north-western Europe in 2006 : Preliminary findings

Author

Elbers, Armin R.W., Mintiens, Koen, Staubach, Christoph, Gerbier, Guillaume, Meiswinkel, Rudolf, Hendrickx, Guy, Backx, Anoek, Conraths, Franz J., Meroc, Estelle, Ducheyne, Els, Gethmann, Jörn M., Heesterbeek, J.A.P., De Clerq, Kris, Unger, F., and Stegeman, Jan Arend

Subjects
Bovin, Ovin, L73 - Maladies des animaux, Fièvre catarrhale du mouton
Abstract

In the middle of August 2006, North-western Europe was shaken by the start of an extensively propagating Bluetongue (BT) epidemic. BT is an arthropod-borne viral noncontagious disease of domestic and wild ruminants, particularly affecting sheep with severe clinical disease and mortality. To date, 24 different BT-serotypes have been identified and the disease is transmitted by biting midges (Culicoides). Soon after the start of the epidemic it was determined that BT virus serotype 8 was involved. BTV8 is new to this European region. The gene sequence is closely related to an isolate from sub-Saharan Africa (Nigeria) from the beginning of the 1980s. BTV-8 has also been found in Pakistan/India, Africa, and the Caribbean. This paper describes the specific aspects of the BTV8 epidemic: onset and course of the epidemic, clinical findings, spatial spread, vector surveillance, the effect of wind on the spread of BTV8, control measures taken and the possibilities for vaccination.

Published
2007

46. Confirmation of spatial patterns and temperature effects in Bluetongue virus serotype-8 transmission in NW-Europe from the 2007 reported case data

Author

Boender, Gert Jan, Hagenaars, Thomas J., Elbers, Armin R.W., Gethmann, Jörn M., Meroc, Estelle, Guis, Hélène, De Koeijer, Aline A., Boender, Gert Jan, Hagenaars, Thomas J., Elbers, Armin R.W., Gethmann, Jörn M., Meroc, Estelle, Guis, Hélène, and De Koeijer, Aline A.

Abstract

Two separate analyses were carried out to understand the epidemiology of Bluetongue virus serotype 8 (BTV-8) in 2007 in North West Europe: First, the temporal change in transmission rates was compared to the evolution of temperature during that season. Second, we evaluated the spatio-temporal dynamics of newly reported outbreaks, to estimate a spatial transmission kernel. For both analyses, the approach as used before in analysing the 2006 BTV-8 epidemic had to be adapted in order to take into account the fact that the 2007 epidemic was not a newly arising epidemic, but one advancing from whereto it had already spread in 2006. We found that within the area already affected by the 2006 outbreak, the pattern of newly infected farms in 2007 cannot be explained by between-farm transmission, but rather by local re-emergence of the virus throughout that region. This indicates that persistence through winter was ubiquitous for BTV-8. Just like in 2006, we also found that the temperature at which the infection starts to spread lies close to 15 °C. Finally, we found that the shape of the transmission kernel is in line with the one from the 2006 epidemic. In conclusion, despite the substantial differences between 2006 and 2007 in temperature patterns (2006 featured a heat wave in July, whereas 2007 was more regular) and spatial epidemic extent, both the minimum temperature required for transmission and the transmission kernel were similar to those estimated for the 2006 outbreak, indicating that they are robust properties, suitable for extrapolation to other years and similar regions.

Published
2014

48. Influence of temperature on BTV-8 transmission in NW-Europe in 2007

Author

De Koeijer, Aline A., Hagenaars, Thomas J., Elbers, Armin R.W., Gethmann, Jörn M., Meroc, Estelle, Guis, Hélène, Boender, Gerrit, De Koeijer, Aline A., Hagenaars, Thomas J., Elbers, Armin R.W., Gethmann, Jörn M., Meroc, Estelle, Guis, Hélène, and Boender, Gerrit

Published
2012

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