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Why working at PHO is important to me:

"Reducing health care-associated infections is an essential component to improving the health of Ontarians.  By working at Public Health Ontario, I am able to generate new knowledge about health-care associated infections through research and help translate these findings into practice and policy through knowledge to action initiatives."

Jennie Johnstone, Infection prevention and control physician
New: Scientist Profile
 Watch Dr. Jennie Johnstone talk about:
  • What excites her about her work
  • The impact of her research
  • Why she chose PHO

Trouble viewing? Watch on YouTube.



    Academic degrees and accreditations

    • Doctor of philosophy (Health Research Methodology), McMaster University
    • Doctor of medicine, Dalhousie University
    • Fellow, The Royal College of Physicians of Canada, Certifications in Internal Medicine and Infectious Diseases
    • Member, College of Physicians and Surgeons of Ontario

    Areas of expertise

    • Infectious disease
    • Infection prevention and control
    • Health care-associated infections
    • Immunosenescence
    • Epidemiology

    PHO research interests

    • Vancomycin-resistant enterococcus and vancomycin-variable enterococcus
    • Clostridium difficile
    • Ventilator-associated pneumonia

    Current PHO research activities

    • Investigating rates and predictors of vancomycin-resistant enterococcal bacteremia in Ontario.
    • Investigating whether probiotics reduce ventilator associated pneumonia (the PROSPECT Trial).
    • Investigating the prevalence of C. difficile colonization among patients admitted to hospital.
    • Collaborating on a project defining the burden of vancomycin variable enterococcus bacteremia.

    Top publications

    1. Johnstone J, Policarpio ME, Lam F, Adomako K, Prematunge C, Nadolny E, Li Y, Brown K, Kerr E, Garber G. Rates of blood cultures positive for vancomycin-resistant Enterococcus in Ontario: a quasi-experimental study. CMAJ Open. 2017;5:E273-80.

    2. Cook DJ, Johnstone J, Marshall JC, Lauzier F, Thabane L, Mehta S, Dodek PM, McIntyre L, Pagliarello J, Henderson W, Taylor RW, Carten-Cebo R, Golan E, Herridge M, Wood G, Ovakim D, Karachi T, Surette MG, Bowdish DM, Lamarche D, Verschoor CP, Duan EH, Heels-Ansdell D, Arabi Y, Meade M. Probiotics: Prevention of Severe Pneumonia and Endotracheal Colonization Trial - PROSPECT: a pilot trial. Trials 2016;17:377.

    3. Prematunge C, MacDougall C, Johnstone J, Adomako K, Lam F, Robertson J, Garber G.  VRE and VSE bacteremia outcomes in the era of effective VRE therapy: a systematic review and meta-analysis. Infect Control Hosp Epidemiol. 2016;37(1):26-35.

    4. Johnstone J, Meade M, Marshall J, Heyland DK, Surette MG, Bowdish DM, Lauzier F, Thebane L, Cook DJ; PROSPECT Investigators and the Canadian Critical Care Trials Group. Probiotics: Prevention of Severe Pneumonia and Endotracheal Colonization Trial – PROSPECT: protocol for a feasibility randomized pilot trial. Pilot Feasibility Stud. 2015;1:19.

    5. Smith JD, MacDougall CC, Johnstone J, Copes RA, Schwartz B, Garber GE. Effectiveness of N95 respirators versus surgical masks to in protecting health care workers from acute respiratory infection: a systematic review and meta-analysis. CMAJ. 2016;188(8):567-74.


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    Page last updated: 2017-08-18 11:08 AM
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