Suzanne Touzeau

Contact details

Email: Suzanne.Touzeau AT jouy.inra.fr Mailing address: INRA - Unité MIA Domaine de Vilvert F-78352 Jouy-en-Josas Cedex - FRANCE Tel.: +33 (0)1 34 65 22 38 Fax: +33 (0)1 34 65 22 17 Secretary: +33 (0)1 34 65 22 31 - Patricia Pophillat

Background

I received my PhD from the Nice Sophia Antipolis University in March 1997, with a thesis on Control models in fisheries (in French) prepared at Projet COMORE (currently BIOCORE), INRIA Sophia Antipolis, France. It was followed by post-doctoral positions in the fisheries field at: Laboratoire MAERHA (currently EMH), IFREMER Nantes, France (1997); Systems Analysis Laboratory, Helsinki University of Technology, Finland (1997); Institut de Ciències del Mar, CSIC Barcelona, Spain (1998-1999).

Since January 2000, I'm a scientist at INRA in the MIA research unit located in Jouy-en-Josas, France (DynEnVie team).

Research Interests

Development and analysis of mathematical models in population dynamics.

• Numerical exploration: parameter identification, sensitivity analysis, simulation.
• Mathematical analysis: parameter identifiability, order reduction, stability.

Applications

Main applications in epidemic modelling.

• Modelling the spread of livestock diseases, in particular: Salmonellaand PRRS in pig herds, scrapie in a sheep flock.
• Design and assessment of control measures.

Research Projects

• K-MASSTEC Knowledge-driven design of MAnagement Strategies for STEm Canker specific resistance genes, INRA / Métaprogramme SMaCH / PRESUME, 2012-2016.
• MIHMES Multi-scale modelling, from animal Intra-Host to Metapopulation, of mechanisms of pathogen spread to Evaluate control Strategies, ANR-Investissements d'avenir / action Bioinformatique, 2012-2016.
• GESTER Management of crop resistances to diseases in agricultural landscapes as a response to new constraints on pesticide use, ANR / programme AgroBiosphère, 2012-2015.
• METAFUN Métagénomique pour évaluer et modéliser la stabilité fonctionnelle du métabolisme du carbohydrate dans le microbiote de l'intestin humain, INRA / Métaprogramme M2E, 2012-2013.
• SimPop Simplification and reduction of models in Population dynamics, RNSC/ISC-PIF project, 2011.
• SANCRE (in French) Animal health, food safety and competitiveness in regional animal production, PSDR-GO, 2008-2011.
• ACDUQ (in French) Collective action for the sustainable control of animal health: sanitary qualification in ruminant farming systems, ANR / programme ADD, 2005-2008.
• NeuroPrion European Network of Excellence dedicated to research on prion diseases, 2004-2008.

Networks

• M3D (in French) Mathematics and decision for sustainable development, RNSC / INRA network - since 2007, coord. since 2009.
• ModStatSP (in French) Modelling and stastistics in crop health, INRA network - since 2011.
• CoReV Models and theories for the control of natural resources and the management of ecological systems, coord. Roger Arditi (AgroParisTech) - since 1994.

Training

Organisation of the EpiCasa - Introduction to epidemiology: mathematical and statistical models and methods research schools (in French), Casablanca, Morocco:

• EpiCasa12, October 2012.
• EpiCasa09, April 2010.
• EpiCasa07, November 2007.

Doctoral students

• Natacha GO - Modelling the immune response: application to the infection of swines by the Porcine Reproductive and Respiratory Syndrome (PRRS), 2011-2014. More (in French)...
• Antoine PERASSO - Parameter identifiability for systems described by partial differential equations: application to population dynamics, 2006-2009. More (in French)...
• Najat ZIYADI - Studying mathematical and individual-based models in epidemiology: application to scrapie transmission dynamics in a sheep flock, 2004-2008. More (in French)...
• Amandine LURETTE - Modelling to assess control measures for Salmonella carriage in slaughter pigs, 2004-2007. More (in French)...

Recent publications

• A. Lurette, S. Touzeau, P. Ezanno, T. Hoch, C. Fourichon, H. Seegers, C. Belloc. Within-herd biosecurity and Salmonella seroprevalence in slaughter pigs: a simulation study. J. Anim. Sci., 89(7):2210-2219, 2011. doi:10.2527/jas.2010-2916
• A. Perasso, B. Laroche, Y. Chitour, S. Touzeau. Identifiability analysis of an epidemiological model in a structured population. J. Math. Anal. Appl., 374(1):154-165, 2011. doi:10.1016/j.jmaa.2010.08.072
• S. Gubbins, S. Touzeau, T. J. Hagenaars. The role of mathematical modelling in understanding the epidemiology and control of sheep transmissible spongiform encephalopathies: a review. Vet. Res., 41(4):42, 2010. doi:10.1051/vetres/2010014
• A. Lurette, S. Touzeau, M. Lamboni, H. Monod. Sensitivity analysis to identify key parameters influencing salmonella infection dynamics in a pig batch. J. Theor. Biol., 258(1):43-52, 2009. doi:10.1016/j.jtbi.2009.01.026
• S. Gaucel, B. Laroche, P. Ezanno, E. Vergu, S. Touzeau. Using singular perturbations to reduce an epidemiological model: application to bovine viral diarrhoea virus within-herd spread. J. Theor. Biol., 258(3): 426-436, 2009. doi:10.1016/j.jtbi.2008.08.011
• A. Perasso, B. Laroche, S. Touzeau. Identifiability analysis of an epidemiological model in a structured population. Rapport technique 2009-5, INRA, UR341 Mathématiques et Informatique Appliquées (F-78350 Jouy-en-Josas, France), 2009. [ .pdf ]
• A. Lurette, C. Belloc, S. Touzeau, T. Hoch, H. Seegers, C. Fourichon. Modelling batch farrowing management within a farrow-to-finish pig herd: influence of management on contact structure and pig delivery to the slaughterhouse. Animal, 2(1):105-116, 2008. doi:10.1017/S1751731107000997
• A. Lurette, C. Belloc, S. Touzeau, T. Hoch, P. Ezanno, H. Seegers, C. Fourichon. Modelling salmonella spread within a farrow-to-finish pig herd. Vet. Res., 39(5):49, 2008. doi:10.1051/vetres:2008026
• B. Schaeffer, B. Mondet, S. Touzeau. Using a climate dependent matrix model to predict mosquito abundance: application to Aedes (Stegomyia) africanus and Aedes (Diceromyia) furcifer (Diptera: Culicidae). Infect. Genet. Evol., 8(4):422-432, 2008. doi:10.1016/j.meegid.2007.07.002
• N. Ziyadi, S. Boulite, M. L. Hbid, S. Touzeau. Mathematical analysis of a PDE epidemiological model applied to scrapie transmission. Comm. Pure Appl. Anal., 7(3):659-675, 2008. doi:10.3934/cpaa.2008.7.659
• N. Ziyadi, S. Touzeau, C. Bidot, J.-P. Treuil, M. L. Hbid. Modèle individu-centré de transmission de la tremblante dans un troupeau ovin. Rapport technique 2008-4, INRA, UR341 Mathématiques et Informatique Appliquées (F-78350 Jouy-en-Josas, France), 2008. [ .pdf ]
• S. Touzeau, M. E. Chase-Topping, L. Matthews, D. Lajous, F. Eychenne, N. Hunter, J. D. Foster, G. Simm, J.-M. Elsen, M. E. J. Woolhouse. Modelling the spread of scrapie in a sheep flock: evidence for increased transmission during lambing seasons. Arch. Virol., 151(4):735-751, 2006. doi:10.1007/s00705-005-0666-y
• M. E. Chase-Topping, L. E. B. Kruuk, D. Lajous, S. Touzeau, L. Matthews, G. Simm, J. D. Foster, R. Rupp, F. Eychenne, N. Hunter, J.-M. Elsen, M. E. J. Woolhouse. Genotype-level variation in lifetime breeding success, litter size and survival of sheep in scrapie affected flocks. J. Gen. Virol., 86(4):1229-1238, 2005. doi:10.1099/vir.0.80277-0
• B. Laroche, S. Touzeau. Parameter identification for a PDE model representing scrapie transmission in a sheep flock. In 44th IEEE Conference on Decision and Control and European Control Conference (Sevilla, Spain), 2005, pp. 1607-1612. Regular paper.

Full listing (since 1997)