RCMS Research Chair in Meat Safety

Alexandre Quessy

Assesment of the development of resistance to colistin in Escherichia coli O149 in pigs

My research focuses on the bacterial foodborne pathogen Campylobacter jejuni as well as on the ecology of the bacteria that inhabit the chicken intestine. C. jejuni can sicken humans by causing enteritis that may last up to 7 days! Often, chicken contaminated meat products are the culprits to be incriminated. It therefore is crucial to eliminate or reduce C. jejuni colonisation of the chicken gastrointestinal tract to avoid it from reaching the consumer. This is why I am researching not only C. jejuni itself but also all other bacteria that cohabit with it. I am studying how these neighboring bacteria can influence C. jejuni chicken colonisation and how they change when the foodborne pathogen is introduced or how they evolve when the method of rearing chicken is altered, like for example, when the chicken feed is modified with essential oils or organic acids.
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Masters in veterinary science, animal health and food safety option

Supervisor: Philippe Fravalo

Co-supervisors: Alexandre Thibodeau et Marie-Lou Gaucher

Academic Background : Bachelor's degree in kinesiology


2017 : Bourse Lucie Besner pour la recherche sur les zoonoses
2017 : Bourse St-Hyacinthe Technopole
2017 : Bourse du Conseil de recherche en sciences naturelles et génie (CRSNG)
2016 : Bourse d’excellence d’admission à la maîtrise, Faculté de médecine vétérinaire

Scientific publications:

Scientific articles

Published abstracts (conference proceedings)