Patrick A. Leighton, Principal Investigator

P. Leighton GREZOSP

Patrick Leighton is Professor of Epidemiology and Public Health at the Faculty of Veterinary Medicine, University of Montreal, and an active member of the Epidemiology of Zoonoses and Public Health Research Group (GREZOSP).  His research focuses on the ecology of wildlife diseases that are transmissible to humans, and in particular the impact of ecological change on the epidemiology of these diseases and the risk they pose to public health. He co-developed and co-directs U. Montreal’s Master’s Programs in One Health and Veterinary Public Health.

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Audrey Simon, Research Associate

A.-Simon-300x234Project: Wildlife diseases important for human health and food safety in the changing environment of the Eastern Subarctic

Audrey’s research focuses on wildlife diseases and public health in the Arctic. She is currently coordinating an ArticNet-funded research program looking at the ecology and epidemiology of wildlife diseases important for human health in the Canadian Arctic, with a focus on food-borne parasites (Toxoplasma and Trichinella) and rabies. She has also co-developed a project on dog-related health issues among Inuit from Nunavik, by using ecosystem approaches to health (Ecohealth).

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Valerie Hongoh, Postdoctoral Researcher

Valerie Hongoh web

Project: Evaluating the risk of raccoon rabies virus re-incursion into Quebec

Valerie’s research focuses on modelling the spatial and temporal risk of raccoon rabies virus re-incursion and translocation into Quebec and the optimization of rabies control operations to minimize this risk.

Contact: Valerie.hongoh        Publications


Yi Moua, Postdoctoral Researcher

Yi Moua

Project: Modelling multi-species rabies dynamics in the Arctic

Yi’s research focuses on modelling the spatial epidemiology of rabies in the Arctic, using agent-based simulation to explore the importance of interactions red and Arctic foxes on rabies dynamics.


Publications       ResearchGate

Olivia Tardy, Postdoctoral Researcher

Olivia Tardy_web

Project: Environmental changes and vector-host-pathogen interactions: applications of modelling approaches to explore the ecological mechanisms underlying the range expansions of vector-borne diseases and rabies in North America

Olivia completed her PhD at Université Laval in 2016 where she studied functional relationships between the heterogeneity of agriculturally fragmented landscapes and space-use patterns of raccoons and striped skunks, two main hosts of the raccoon rabies virus variant. Her postdoctoral research focuses on spatio-temporal modelling and mapping of zoonotic disease risk in the context of environmental changes with emphasis on vector-borne diseases (especially Lyme disease), and rabies in raccoons, striped skunks, red foxes and Arctic foxes in North America. Olivia is currently working on the development of an agent-based model to explore how the interplay between the animal dispersal behaviour and landscape characteristics influences the rate of vector-borne disease spread.

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Agathe Allibert, PhD Student

Agathe Allibert_web_small

Project: Modelling the future dynamics of Arctic fox rabies

Arctic fox rabies poses a significant threat to public health in the Canadian Arctic. Rabies can spread quickly due to long-distance movements of foxes over tundra and sea ice. Climate change is likely to impact the public health risk of rabies in the north by altering the range and quality of fox habitat, as well as fox movement behavior and interactions. Agathe’s PhD explores the impact of climate warming on future rabies dynamics with applications to rabies risk management in the Canadian Arctic.

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Émilie Bouchard, PhD Student

Emilie Bouchard - Web

Project: Zoonotic parasites in carnivores in the changing Eastern Subarctic

Émilie completed her DVM at Université de Montréal in 2013, and MSc in 2016 at University of Saskatchewan where she studied transmission dynamics of Toxoplasma gondii in the Canadian Arctic. Her PhD focuses on the distribution of food-borne parasites (Toxoplasma and Echinococcus) in carnivores in southern and northern Quebec, with a modelling component linking Arctic foxes, Toxoplasma gondii and climate change.

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Ariane Dumas, PhD Student

Ariane Dumas - WebProject: Determinants of the spatial distribution of Ixodes scapularis ticks in a periurban nature park

Ariane completed a multidisciplinary BSc in Environmental Sciences and GIS at UQÀM. Her PhD project focuses on the dynamics of Lyme disease emergence in southern Québec, aiming to identify ecological factors and processes that are critical for the establishment of both the ticks and the pathogen that causes Lyme disease.


Rindra Rakotoarinia Randriamialy, PhD Student

Rindra Web

Project: Impact of environmental changes in Québec and Ontario on the risk of exposure to mosquito-borne zoonotic diseases

Risks associated to mosquito-borne diseases (MBD) are linked to several factors such as global warming, global changes in the environment as a result of human activities, and increased global trade, increasing the risk of introducing exotic diseases. Much work has been done to date on modeling the impacts of climate change on mosquito habitats in North America but, to our knowledge, none has been interested in the joint impacts of climatic factors and other factors, such as anthropogenic changes. Rindra’s PhD focuses on the combined effects of climate change and land use on the risk exposure to MBD in Quebec and Ontario.


Caroline Sauvé, PhD Student

Caroline sauvé - web

Project: Rabies in small Indian mongooses in the Caribbean: influence of spatial ecology, social behavior and landscape features on disease dynamics, and implications for control and management

Caroline completed a M.Sc. in biology at Université Laval in 2014 where she studied marine mammal ecology and behaviour. While completing her DVM, she is carrying out a research PhD project modelling the influences of mongoose ecology and landscape structure on rabies dynamics in Puerto Rico. The results of the model are expected to help identify optimal long-term control strategies for canine rabies at the island scale.

Contact:        Publications        ResearchGate

Delphine De Pierre, MSc Student

Delphine de Pierre

Determining the effects of the winter tick (Dermacentor albipictus) on moose health: an experimental approach

The winter tick, like many arthropod species in North America, is likely to see its range increased by climate change and human activities. Delphine’s research focuses on manipulating the parasite burden of winter ticks on moose calves in the field to determine the effect of tick load on different aspects of moose health.


Hélène Déry, MSc Student

Helene Déry2 - web

Project: Spatial distribution and gastrointestinal parasitism of dogs in communities of Nunavik

Hélène is completing a joint DVM-MSc program at Université de Montréal. Her MSc project focuses dogs in Nunavik communities, both their spatial distribution within the community and the prevalence of gastro-intestinal parasitism, with the aim of assessing risk factors for parasitism in dogs and transmission of zoonotic parasites to people.


Marie-Christine Frenette, MSc Student

Marie-Christine Frenette - web

Project: Spatial and temporal variation in contact and risk of rabies transmission among foxes in the Arctic







Camille Guillot, MSc Student

Camille Guillot web

Project: Sentinel surveillance for vector-borne disease: tracking the emergence of Lyme disease in Canada

Lyme disease (LD) is a vector-borne zoonotic disease caused by the spirochete Borrelia carried by the black-legged tick (Ixodes scapularis) with increasing incidence in Southern Canada. In 2010, 143 cases were reported in the country, rising to almost 1000 cases in 2016. Camille’s research explores the acarologic and human risk factors which could explain this rise in LD incidence, using data from sentinel surveillance sites and reported human cases.


Jérôme Pelletier, MSc Student

Jérôme Pelletier - Web

Project: Ecological control of the transmission cycle of Borrelia burgdorferi through administration of acaricidal treatment to Peromyscus mice

Lyme disease, caused by the bacteria Borrelia burgdorferi, and its vector, the black-legged tick Ixodes scapularis, is currently emerging in southern Quebec. One approach to reduce the risk of Lyme disease is to treat the rodent reservoirs of the disease in nature to control ticks and thus interrupt local endemic cycle of the disease. Jérôme’s MSc project focuses on evaluating a new approach for treating wild rodents with potential applications for the control of tick populations in periurban environments.


Carol-Anne Villeneuve, MSc Student

Carol-Anne Villeneuve (2)

Project: Arboviruses in the Arctic zone: diversity and infectious status of arthropod vectors

Carol-Anne completed a B.Sc. in Microbiology and Immunology at University of Montreal in 2017. Her M.Sc. project focuses on the diversity and the infectious status of mosquitoes across the Canadian Arctic, aiming to better understand vector-borne disease important for human health in the North.

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