Charlotte VALAT

Identifiants chercheurs

IdHAL :

charlotte-valat

ORCID :

0000-0002-3328-0278

Présentation

Scientist with 17+ years of experience working in the French Food Safety Agency. My activity focused on the characterization of the virulence of bacterial pathogens from beef and poultry. I am currently setting up a national surveillance system for food poisoning and developing projects to value Next-generation sequencing (NGS) data for food borne pathogen surveillance.

Publications

Poster de conférence (5)

Bacterial and farm management risk factors in raw milk cheese production Alisia Chiadò Rana,Géraldine Cazeau,Stéphanie Bougeard,Kevin Bethune,Vincent Chochoiset al. Conference Society for Veterinary Epidemiology and Preventive Medicine (SVEPM), Mar 2025, Berlin, Germany. 86, 2018 Poster de conférence anses-05151336v1
SOA8 – WGS surveillance of animal pathogens and AMR (SPAMR-VET) –ST2.1, ST2.2 Lucie Collineau,Charlotte Valat,Anouk Rioual,Anne Margrete Urdahl,Camilla Sekse European Partnership on Animal Health and Welfare Scientific Workshop (EUPAHW), Jun 2024, Thessalonique, Greece. Poster Poster de conférence anses-04600896v1
Exploring the Bacterial Communities During the Artisanal Production of Uncooked Pressed Cheese From Raw Bovine Milk Alisia Chiadò,Charlotte Valat,Géraldine Cazeau,Kevin Béthune,Vincent Chochoiset al. IUMS 2024, Oct 2024, Florence, Italy. , pp.Poster Poster de conférence anses-04827345v1
Characterization of bacterial communities during bovine raw milk and artisanal uncooked pressed cheese production: Implications for dairy products safety and quality Alisia Chiadò Rana,Charlotte Valat,Géraldine Cazeau,Kevin Bethune,Vincent Chochoiset al. 13th European Farmhouse and Artisan Cheese & Dairy Meeting, Oct 2023, Grangeneuve, Switzerland. Poster Poster de conférence anses-04416932v1
Digestive response of young rabbits to an experimental reproduction of colibacillosis according to two feeding strategies Mélanie Martignon,E. Repérant,Dominique Licois,C. Valat VETPATH 2010 -First Prato Conference on the Pathogenesis of Bacterial Diseases of Animals., Oct 2010, Prato, Italy. , pp.1, 2010 Poster de conférence hal-02821536v1

Article dans une revue (20)

A retrospective multivariate case-control approach to investigate factors influencing the sanitary quality of raw milk cheeses Alisia Chiado Rana,Géraldine Cazeau,Stéphanie Bougeard,Kevin Bethune,Vincent Chochoiset al. Applied Food Research, 2024, 4 (2), pp.100617. ⟨10.1016/j.afres.2024.100617⟩ Article dans une revue anses-04816878v1
F74 plasmids are major vectors of virulence genes in bovine NTEC2 Charlotte Valat,Marisa Haenni,Youssef Arnaout,Antoine Drapeau,Edouard Hirchaudet al. Letters in Applied Microbiology, 2022, 75 (2), pp.355-362. ⟨10.1111/lam.13733⟩ Article dans une revue anses-03715577v1
Characterization of cultivable airborne bacteria and their antimicrobial resistance pattern in French milking parlour Sandrine Bayle,Antoine Drapeau,Janick Rocher,Frédéric Laurent,Véronique Métayeret al. Environmental Science and Pollution Research, 2021, 28 (9), pp.11689-11696. ⟨10.1007/s11356-020-11974-8⟩ Article dans une revue hal-03128696v1
Challenging the growing rabbit with a moderately pathogenic E. coli under ad libitum or limited feed intake conditions: impact on digestive physiology, bacterial communities, and on post-weaning growth M. Martignon,C. Burel,Dominique Licois,Elisabeth Répérant,G. Postollecet al. World Rabbit Science, 2021, 29 (1), pp.1-10. ⟨10.4995/wrs.2021.14089⟩ Article dans une revue hal-03187454v1
Overall changes in the transcriptome of Escherichia coli O26:H11 induced by a subinhibitory concentration of ciprofloxacin C. Valat,E. Hirchaud,A. Drapeau,F. Touzain,C. Boissesonet al. Journal of Applied Microbiology, 2020, 129 (6), pp.1577-1588. ⟨10.1111/jam.14741⟩ Article dans une revue anses-04146571v1
Pathogenic Escherichia coli in Dogs Reveals the Predominance of ST372 and the Human-Associated ST73 Extra-Intestinal Lineages Charlotte Valat,Antoine Drapeau,Stéphanie Beurlet,Véronique Bachy,Henri-Jean Boulouiset al. Frontiers in Microbiology, 2020, 11, pp.580. ⟨10.3389/fmicb.2020.00580⟩ Article dans une revue anses-04032477v1
Variant O89 O-Antigen of E. coli Is Associated With Group 1 Capsule Loci and Multidrug Resistance Susan Harris,Marta Piotrowska,Robert Goldstone,Ruby Qi,Geoffrey Fosteret al. Frontiers in Microbiology, 2018, 9 (4), pp.1308-1309. ⟨10.3389/fmicb.2018.02026⟩ Article dans une revue hal-04669210v1
Complete sequence of transferable IncHI2/ST4 plasmid carrying blaCTX-M-1 and mcr-1 from an enterohaemorrhagic Escherichia coli (EHEC) from bovine origin Charlotte Valat,Méganne Billet,Pierrick Lucas,Edouard Hirchaud,Fabrice Touzainet al. Journal of Microbiology and Antimicrobial Agents, 2017, 3 (2), pp.34-37 Article dans une revue hal-04669057v1
Draft Genome Sequences of Enterohemorrhagic Escherichia coli Encoding Extended-Spectrum Beta-Lactamases Charlotte Valat,Robert J Goldstone,Edouard Hirchaud,Marisa Haenni,David G E Smithet al. Genome Announcements, 2016, 4 (1), pp.e01633-15. ⟨10.1128/genomeA.01633-15.⟩ Article dans une revue anses-04394195v1
Absence of co-localization between pathovar-associated virulence factors and extended-spectrum β-lactamase (bla CTX-M) genes on a single plasmid Charlotte Valat,Karine Forest,Méganne Billet,Charlène Polizzi,Estelle Saraset al. Veterinary Microbiology, 2016, 192, pp.163-166. ⟨10.1016/j.vetmic.2016.07.011⟩ Article dans une revue anses-04388889v1
Assessment of Adhesins as an Indicator of Pathovar-Associated Virulence Factors in Bovine &lt;em&gt;Escherichia coli&lt;/em&gt; Charlotte Valat,Karine Forest,Frédéric Auvray,Véronique Métayer,Thomas Meheutet al. Journal of Applied Microbiology, 2014, 80 (23), pp.7230-7234. ⟨10.1128/AEM.02365-14⟩ Article dans une revue hal-02634945v1
Phylogenetic Grouping and Virulence Potential of Extended-Spectrum-β-Lactamase-Producing Escherichia coli Strains in Cattle Charlotte Valat,Frédéric Auvray,Karine Forest,Véronique Métayer,Emilie Gayet al. Applied and Environmental Microbiology, 2012, 78 (13), pp.4677-4682. ⟨10.1128/aem.00351-12⟩ Article dans une revue anses-04019333v1
CTX-M-15 Extended-Spectrum beta-Lactamase in a Shiga Toxin-Producing Escherichia coli Isolate of Serotype O111:H8 Charlotte Valat,Marisa Haenni,Estelle Saras,Frédéric Auvray,Karine Forestet al. Applied and Environmental Microbiology, 2012, 78 (4), pp.1308 - 1309. ⟨10.1128/AEM.06997-11⟩ Article dans une revue hal-02645520v1
Transfer of melamine in some poultry products C. Valat,P. Marchand,B. Veyrand,M. Amelot,Christine Burelet al. Poultry Science, 2011, 90 (6), pp.1358-1363. ⟨10.3382/ps.2010-01205⟩ Article dans une revue hal-01985347v1
Etude in vivo du transfert de la mélamine vers certaines productions avicoles, notamment oeufs et viande Charlotte Valat,P. Le Marchand,B. Veyrand,Michel Amelot,Christine Burelet al. TeMA, 2010, 16, pp.23-27 Article dans une revue hal-02059772v1
Impact of deoxynivalenol on the intestinal microflora of pigs Yann Wache,Charlotte Valat,Gilbert Postollec,Stephanie Bougeard,Christine Burelet al. International Journal of Molecular Sciences, 2008, 10 (1), pp.1-17. ⟨10.3390/ijms10010001⟩ Article dans une revue hal-01985348v1
The use of field studies to establish the performance of a range of tools for monitoring water quality Benoît Roig,Charlotte Valat,Ian John Allan,Richard Greenwood,Catherine Berhoet al. Trends in Analytical Chemistry, 2007, 26 (4), pp.274-282. ⟨10.1016/j.trac.2007.02.005⟩ Article dans une revue istex hal-01662709v1
Using bioluminescent biosensors for hazard analysis and critical control point (HACCP) in wastewater control C. Valat,D. Champiat,J.-R. Degorce-Dumas,O. Thomas Water Science and Technology, 2004, 49 (1), pp.131-138. ⟨10.2166/wst.2004.0038⟩ Article dans une revue hal-04664791v1
Use of ATP bioluminescence to determine the bacterial sensitivity threshold to a bacteriocin Charlotte VALAT,Dominique Champiat,Thi Thanh Thuy N'Guyen,Gérard Loiseau,Maurice Raimbaultet al. Luminescence, 2003, 18 (5), pp.254-258. ⟨10.1002/bio.735⟩ Article dans une revue istex hal-04669212v1
Comportement de porte-greffes résistants à la chlorose dans le vignoble de Tavel : résultats de 9 années d'expérimentation C. Valat,M-Helene Valadier,Renaud Pouget,M. Ottenwaelter Le Progrès agricole et viticole [Publications et Actualités Vitivinicoles], 1988, 105 (18), pp.407-410 Article dans une revue hal-02723226v1

HDR (1)

Molecular monitoring of pathogenic bacteria in food, animals and the environment Charlotte Valat Life Sciences [q-bio]. Université Lyon 1 - Claude Bernard, 2024 HDR tel-04669683v1

Communication dans un congrès (2)

Réponse digestive du lapereau à une inoculation expérimentale colibacillaire (O128:C6) en fonction du niveau d'ingestion Mélanie Martignon,Dominique Licois,Laurent Cauquil,M. Amelot,Sylvie Combeset al. 14. Journées de la Recherche Cunicole, Nov 2011, Le Mans, France Communication dans un congrès hal-02746773v1
Specific targeted research project Poultryflorgut Charlotte Valat,Frédéric Bousquié,Christine Burel 16. European Symposium on poultry Nutrition, Aug 2007, Strasbourg, France Communication dans un congrès hal-02018417v1

Chapitre d'ouvrage (3)

Effect of probiotic or antimicrobial treatments on the intestinal bacterial community in pigs Elisabeth Reperant,T. Hadiouche,Gilbert Postollec,Eric Boilletot,Christine Burelet al. Animal hygiene and sustainable livestock production. Proceedings of the XVth International Congress of the International Society for Animal Hygiene, Tribun EU s. r. o, 595 p., 2011, 9788026300083 Chapitre d'ouvrage hal-02052968v1
The effect of feed on the host-microflora interactions in poultry: an overview Christine Burel,Charlotte Valat Sustainable Animal Production, the challenges and potential developments for professional farming, Wagenigen Academic Publishers, The Netherlands, 18 p., 2009, 9789086860999 Chapitre d'ouvrage hal-02059773v1
Chapter 4: Evaluation of the field performance of emerging water quality monitoring tools Catherine Berho,Nathalie Guigues,Anne Togola,Anne-Marie Fouillac,Ian J. Allanet al. C. Gonzalez, R. Greenwood and P. Quevauviller. Rapid Chemical and Biological Techniques for Water Monitoring, John Wiley & Son, pp.287-300, 2009 Chapitre d'ouvrage hal-01669182v1

Rapport (4)

Control of the intestinal flora ecology in poultry for ensuring the products safety for human consumers Christine Burel,Charlotte Valat,Marianne Chemaly,Julie Puterflam,Henrik Christensenet al. [Research Report] Union Européenne. 2008, 215 p Rapport (rapport de recherche) hal-03368988v1
Control of the intestinal flora ecology in poultry for ensuring the products safety for human consumers. Rapport d’activité annuelle (3ème année) du Programme européen PoultryFlorGut 2005-2008 Christine Burel,Charlotte Valat,Marianne Chemaly,Julie Puterflam,Henrik Christensenet al. [Research Report] INRA SRA. 2008, 119 p Rapport (rapport de recherche) hal-03369113v1
Control of the intestinal flora ecology in poultry for ensuring the products safety for human consumers Charlotte Valat Anses, Laboratoire de Ploufragan-Plouzané-Niort, 41 rue de Beaucemaine, 22440 Ploufragan. 2008 Rapport hal-04669458v1
Control of the intestinal flora ecology in poultry for ensuring the products safety for human consumers. Rapport d’activité annuelle (2ème année) du Programme européen PoultryFlorGut 2005-2008 Christine Burel,Charlotte Valat,Marianne Chemaly,Julie Puterflam,Henrik Christensenet al. [Research Report] INRA SRA. 2007, 82 p Rapport (rapport de recherche) hal-03369120v1