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Centre intégré universitaire de santé
et de services sociaux de l'Est-de-l'Île-de-Montréal

Centre intégré universitaire de santé et de services sociaux de l'Est-de-l'Île-de-Montréal

Christian Lavallée

Christian Lavallée

Clinical Associate Professor


Université de Montréal

Research Axes

Clinical research

Contact information

Phone: 514 252-3400, poste 4524

Dr. Lavallée is a certified medical specialist in medical microbiology and infectious diseases. His expertise is in antibacterial resistance, diagnostic laboratory management, and clinical epidemiology.

Research Unit

His area of research focuses on the epidemiology, diagnosis and treatment of infections caused by multidrug-resistant bacteria (particularly enterobacteriaceae). His research activities also include hospital infection epidemiology and the optimization of laboratory processes.

  • Desjardins M, Lefebvre B, Lavallée C, Labbé AC, Mauffrey F, Martin I, Longtin J, Fortin C. Gradient diffusion susceptibility testing for Neisseria gonorrhoeae: an accurate alternative to agar dilution in high-MIC strains? Access Microbiol. 2020 Mar 25;2(5):acmi000116.
  • Trends in health care-associated infections in acute care hospitals in Canada: an analysis of repeated point-prevalence surveys. Mitchell R, Taylor G, Rudnick W, Alexandre S, Bush K, Forrester L, Frenette C, Granfield B, Gravel-Tropper D, Happe J, John M, Lavallee C, McGeer A, Mertz D, Pelude L, Science M, Simor A, Smith S, Suh KN, Vayalumkal J, Wong A, Amaratunga K; Canadian Nosocomial Infection Surveillance Program. CMAJ. 2019 Sep 9;191(36):E981-E988.
  • Chakravarti A, Soualhine H, Sharma M, Rivest P, Poirier L, Lavallée C. Indigenous Transmission of Mycobacterium africanum in Canada: A Case Series and Cluster Analysis. Open Forum Infect Dis. 2019 Mar 7;6(4):ofz088. doi: 10.1093/ofid/ofz088.
    More detail
  • Boyd DA, Mataseje LF, Pelude L, Mitchell R, Bryce E, Roscoe D, Embree J, Katz K, Kibsey P, Lavallee C, Simor AE, Taylor G, Turgeon N, Langley JM, Amaratunga K, Mulvey MR. Results from the Canadian Nosocomial Infection Surveillance Program for detection of carbapenemase-producing Acinetobacter spp. in Canadian hospitals, 2010-16. Canadian Nosocomial Infection Surveillance Program. J Antimicrob Chemother. 2019 Feb 1;74(2):315-320.
  • Ambaraghassi G, Béliveau C, Labbé AC, Lavallée C. Relevance or performance: potential savings associated with verification of prior results before performing microbiology analysis. Diagn Microbiol Infect Dis. 2019 Feb;93(2):136-139.
  • Lavallée C, Labbé AC, Talbot JD, Alonso CD, Marr KA, Cohen S, Laverdière M, Dufresne SF. Risk factors for the development of Clostridium difficile infection in adult allogeneic hematopoietic stem cell transplant recipients: A single-center study in Québec, Canada. Transpl Infect Dis. 2017 Feb;19(1). doi: 10.1111/tid.12648.
    More detail
  • Delisle G, Quach C, Domingo MC, Boudreault AA, Gourdeau M, Bernatchez H, Lavallée C. Escherichia coli antimicrobial susceptibility profile and cumulative antibiogram to guide empirical treatment of uncomplicated urinary tract infections in women in the province of Québec, 2010-15. J Antimicrob Chemother. 2016 Dec;71(12):3562-3567.
  • Dufresne SF, Marr KA, Sydnor E, Staab JF, Karp JE, Lu K, Zhang SX, Lavallée C, Perl TM, Neofytos D. Epidemiology of Candida kefyr in patients with hematologic malignancies. J Clin Microbiol. 2014 Jun;52(6):1830-7.
  • Morris D, Boyle F, Ludden C, Condon I, Hale J, O'Connell N, Power L, Boo TW, Dhanji H, Lavallee C, Woodford N, Cormican M. Production of KPC-2 carbapenemase by an Escherichia coli clinical isolate belonging to the international ST131 clone. Antimicrob Agents Chemother. 2011 Oct;55(10):4935-6.
  • Lavallée C, Rouleau D, Gaudreau C, Roger M, Tsimiklis C, Locas MC, Gagnon S, Delorme J, Labbé AC. Performance of an agar dilution method and a Vitek 2 card for detection of inducible clindamycin resistance in Staphylococcus spp. J Clin Microbiol. 2010 Apr;48(4):1354-7.


  • M.D.

    Université de Montréal

  • Specialist certificate in medical microbiology and infectious diseases

    Université de Montréal

  • Fellowship in the resistance mechanisms of enterobacteriaceae

    Antibiotic Resistance Monitoring & Reference Laboratory

  • MSc in epidemiology

    London School of Hygiene and Tropical Medecine