Cirad

Gaëlle Nicolas

Research assistant in spatial epidemiology

undefined 

                 

                     

     

Contact details: nicolas.gaelle@yahoo.fr

Keywords 

Epidemiology; Complex ecosystems; Modelling of infectious disease (SIR/SEIR); Social Network Analyses (SNA); Field work; Rift Valley fever

Background/Summary

After a Master degree in Animal Health and Epidemiology of Tropical Diseases (Master SAEPS, Montpellier, France), I began a Ph.D. on Ecosystems in 2010. My research project was devoted to the understanding of the Rift Valley fever virus circulation in an unexpected ecosystem (the temperate and mountainous ecosystem of Madagascar highlands) with a particular emphasis on the modelling of the viral spread. During this Ph.D I was based in Madagascar for 1.5 years to collect the useful study data and 1 year in each: ANSES and CIRAD teams, to analyse this data and share competences. My Ph.D was defended on the December 16th, 2013.

Ph.D. title: Rift Valley fever spreading by cattle movements: modelling of the viral circulation in a temperate and mountainous ecosystem of Madagascar

Entitulé de thèse: Diffusion de la fièvre de la vallée du Rift par les mouvements de ruminants : modélisation de la circulation virale dans un écosystème tempéré et montagneux de Madagascar   

Ph.D Location 
 
Following: Post-doctoral position in spatial epidemiology

2 -year Post-Doc position in livestock and human population distribution modeling, Université Libre de Bruxelles (ULB, Brussels, Belgium).

Starting date: january 2014

 

Research interest:

Through the understanding of social habits and local practices I try to estimate impact of Human and environmental factors on the emergence of infectious diseases with a particular focus at the inter-species interface (Wildlife/Livestock/Human).

 

Publications

Journal articles

Nicolas G., Chevalier V., Tantely L., Fontenille D., Durand B. (In Prep). A spatially explicit metapopulation model and cattle trade analysis allow identifiying the key determinants of the recurrent circulation of Rift Valley fever virus in a pilot area of Madagascar highlands. PLoS Negl Trop Dis.

Nicolas G., Durand B., Rakotoarimanana TT., Lacote S., Chevalier V., Marianneau P., 2013. A three years serological and virological catte follow-up in Madagascar highlands suggests a non-classical transmission route of Rift Valley fever virus. Am J Trop Med Hyg. Epub Dec 23

Balenghien T., Cardinale E., Chevalier V., Elissa N., Failloux AB., Jean José Nipomichene TN., Nicolas G., Rakotoharinome VM., Roger M., Zumbo B., 2013. Towards a better understanding of Rift Valley fever epidemiology in the South-West of the Indian Ocean. Vet Res, 44: 78. All authors have contributed equally and accordingly, have been placed in alphabetical order.

Nicolas G., Durand B., Duboz R., Rakotondravao R., Chevalier V., 2013. Specific cattle exchange practices and vector based transmission shape RVFV circulation in Madagascar highlands. Proceeding SVEPM2013, 31-42. [pdf]

Nicolas G., Durand B., Duboz R., Rakotondravao R., Chevalier V., 2013. Description and analysis of cattle trade network in Madagascar highlands: potential role in the diffusion of Rift Valley fever virus. Acta Trop, 126: 19-27.

 

 

Lectures

PhD defense presentation, 16 of December 2013, Montpellier, France. Diffusion de la fièvre de la vallée du Rift par les mouvements de ruminants : modélisation de la circulation virale dans un écosystème tempéré et montagneux de Madagascar. [pdf]

14th international conference of the association of institutions for tropical veterinary medicine (AITVM), 25-29 August 2013, Johannesburg, South Africa. Modelling spatial spread of RVFV in a temperate and montainous area of Madagascar. 

Society for Veterinary Epidemiology and Preventive Medicine (SVEPM), 20-22 Mars 2013, Madrid, Spain. Specific cattle exchange practices and vector based transmission shape RVFV circulation in Madagascar Highlands

Colloque international de parasitologie/Vet2011, 9-11 Novembre 2011, Antananarivo, Madagascar. Description et analyse du réseau commercial des bovins sur les Hautes Terres de Madagascar et rôle dans la diffusion de la Fièvre de la Vallée du Rift. 

 

 

Posters 

Nicolas G., Chevalier V., Fontenille D., Durand B. Maintenance mechanisms of RVFV in a temperate and mountainous ecosystem of Madagascar: Dynamic modelling based on field data. 19-22 November 2013, Epidemics4, Amsterdam, The Netherland. [pdf]

Nicolas G., Chevalier V., Fontenille D., Durand B. Modelling spatial spread of RVFV in a temperate and mountainous ecosystem of Madagascar. 12 July 2013, AG IRD MIVEGEC, Montpellier, France. [pdf]

Nicolas G., Durand B., Chevalier V. The influence of specific cattle exchange networks on RVFV spread on Madagascar highlands. 25-26 March 2013,  Network Dynamics, Montpellier, France. [pdf]

Nicolas G., Durand B., Duboz R., Rakotondravao R., Chevalier V. Cattle trade network in Madagascar Highlands and Rift Valley Fever virus circulation. 20-24 August 2012, 13th ISVEE, Maastricht, The Netherlands. [pdf]

Nicolas G., Durand B., Duboz R., Rakotondravao R., Chevalier V. Cattle trade network in Madagascar Highlands and diffusion of Rift Valley Fever virus. 28-30 March 2012, SVEPM2012, Glasgow, Scotland. [pdf]

 

         Liste CIRAD des publications de Gaëlle Nicolas

Il semble que vous naviguiez depuis un appareil de type 'bureau'

Tester plus en détail