Faculty profile

Jennie Johnstone

Back to faculty

Assistant ProfessorClinical Public Health DivisionUniversity of Toronto

Jennie Johnstone

Assistant Professor

Clinical Public Health Division

Dalla Lana School of Public Health

University of Toronto

Toronto, Ontario, Canada

Supervision signals

Professors usually supervise graduate students in their department's programs.
58 publications in the last five years, latest in 2026.
Senior (last) author on 5 recent papers, a sign of leading a research group.
Principal investigator on 5 research grants (5 CIHR), most recently in 2025.

These signals come from public records, including CIHR, NSERC and SSHRC funding decisions. Ask the professor or the graduate program whether they are taking new students.

Academic metrics

Publications

1,770

Citations

h-index

154

Collaborators

Grants

Publications by year

Counts cover the works listed on the university profile; citation counts come from Dimensions.

Profiles and links

Search on Google Scholar

Find them onX · LinkedIn · Bluesky · YouTube

Signals and details

Research

Adaptive Platform Trial Antibiotic De-Escalation Antimicrobial Resistance Bloodstream Infection Central Venous Catheter Infection Gram Negative Bacteremia Antibiotic Step-Down Randomized Controlled Trial

Latest papers

Cefazolin for Methicillin-Susceptible Staphylococcus aureus Bacteremia
New England Journal of Medicine · 2026
Mapping Reported Modes of Transmission of Highly Pathogenic Avian Influenza A (H5N1) to Humans: A Scoping Review
One Health · 2026
Factors associated with severe health outcomes among community-dwelling older adults hospitalized with respiratory syncytial virus
Journal of Infection · 2026

All 97 publications

Latest funding

BALANCE+: A Platform Trial for Gram Negative Bloodstream Infections
CIHR · 2025 · Principal investigator
$1,908,674
Avian influenza suRveillance in Companion animal and Human healthcare settings [ARCH]
CIHR · 2024 · Co-investigator
$150,000
Evaluating the impact of a SIMPlified LaYered consent process versus a conventional informed consent form on recruitment of potential participants to a large platform clinical trial: a pragmatic nested randomized controlled trial (SIMPLY-SNAP Trial) - Full Proposal
CIHR · 2023 · Principal investigator
$149,176

All 17 grants and awards

97 publications.

Cefazolin for Methicillin-Susceptible Staphylococcus aureus Bacteremia

Lee TC, Barina LA, Walls G, Goodman AL, Yahav D, Cheng MP, Bonten M, Bowen AC, Boyles T, Daneman N

New England Journal of Medicine202613 citations

DOI: 10.1056/nejmoa2506905

Mapping Reported Modes of Transmission of Highly Pathogenic Avian Influenza A (H5N1) to Humans: A Scoping Review

Billias N, D’Alessandro V, Pouliopoulou DV, Wong JJ, Miller E, Hopkins JP, Boutsikari EC, Cipriano LE, da Veiga Pereira T, Johnstone J

One Health20261 citations

DOI: 10.1016/j.onehlt.2026.101492

Factors associated with severe health outcomes among community-dwelling older adults hospitalized with respiratory syncytial virus

Atukorale VN, Kwong JC, Hernandez A, Moineddin R, Lee N, Kopp A, Andrew MK, Bronskill SE, Brown KA, Daneman N

Journal of Infection2026

DOI: 10.1016/j.jinf.2026.106797

Incidence of colonization and infection with carbapenemase-producing Enterobacterales in Toronto and Peel Region, Ontario, 2007-2024.

Li AX, Lefebvre M, Zhong Z, Almohri H, Armstrong I, Baqi M, Barker KR, Borgia S, Coleman BL, Downing M

JAMMI2026

DOI: 10.3138/jammi-2025-0027

Identification of plasmid-mediated tigecycline resistance tet(x4) and New Delhi metallo-β-lactamase (NDM) in an Escherichia coli isolate from Canada.

Mataseje LF, Lerminiaux N, McGeer A, Johnstone J, Poutanen S, McGill E, Longtin Y, Canadian Nosocomial Infection Surveillance Program (CNISP)

Microbiology spectrum2025

DOI: 10.1128/spectrum.00976-25 PMID: 41060019

An interrupted time-series analysis assessing the association of the COVID-19 pandemic on healthcare-associated infections and antimicrobial-resistant organisms in Canadian acute care hospitals, 2018-2022.

Silva A, Bartoszko JJ, Cayen J, Choi KB, Mitchell R, Comeau JL, Frenette C, Hota SS, Johnstone J, Katz KC, Smith SW, Srigley JA, Suh KN, Thampi N, Canadian Nosocomial Infection Surveillance Program

Infection control and hospital epidemiology2025

DOI: 10.1017/ice.2025.10247 PMID: 40928131

Surveillance for Health Care-Associated Infections, Antimicrobial Resistant Organisms and Antimicrobial use in Canadian Long-Term Care Homes: A Cross-Sectional Survey.

Bartoszko JJ, Neitzel A, Suleman Z, Duncombe T, Golding G, Happe J, McFarlane AC, McGeer A, Belzile M, Cohoon C, Salib Y, Weir J, Johnstone J, Rodrigues R, Catt B, Choi K, Crkvenjas S, Daclan L, Gable Y, Mitchell R, Suh K, Thompson E, Johnston BL, Varsaneux O

Journal of the Association of Medical Microbiology and Infectious Disease Canada = Journal officiel de l'Association pour la microbiologie medicale et l'infectiologie Canada2025

DOI: 10.3138/jammi-2024-0019 PMID: 40673049

Clinician survey for the management of central venous catheter-related bloodstream infection: Catheter retention versus replacement.

Buskandar F, Fowler RA, Johnstone J, Lee TC, MacFadden DR, McDonald EG, Oliver MJ, Ong SWX, Paterson D, Pinto R, Rishu A, Rogers B, Yahav D, Daneman N

Journal of the Association of Medical Microbiology and Infectious Disease Canada = Journal officiel de l'Association pour la microbiologie medicale et l'infectiologie Canada2025

DOI: 10.3138/jammi-2024-0037 PMID: 41311613

Invasive Group A Streptococcal Infection in Children, 1992-2023

Dabaja-Younis H, Kandel C, Green K, Johnstone J, Zhong Z, Kassee C, Allen V, Armstrong I, Baqi M, Barker K

JAMA Network Open202526 citations

DOI: 10.1001/jamanetworkopen.2025.2861

Oseltamivir Reduces 30-Day Mortality in Older Adults With Influenza: A Pooled Analysis From the 2012–2019 Serious Outcomes Surveillance Network of the Canadian Immunization Research Network

Pott H, Andrew MK, Shaffelburg Z, Nichols MK, Ye L, ElSherif M, Hatchette TF, LeBlanc JJ, Ambrose A, Boivin G

Open Forum Infectious Diseases202513 citations

DOI: 10.1093/ofid/ofaf058

BALANCE+: A Platform Trial for Gram Negative Bloodstream Infections

Principal investigatorCIHR2025Project Grant

Principal investigators: Daneman, Nick; Fowler, Robert A; Johnstone, Jennie; Lee, Todd C; MacFadden, Derek R; McDonald, Emily G; Ong, Sean W; Pinto, Ruxandra; Rogers, Benjamin A

Keywords: Adaptive Platform Trial; Antibiotic De-Escalation; Antibiotic Duration; Antibiotic Oral Switch; Antimicrobial Resistance; Bloodstream Infection; Central Venous Catheter Infection; Gram Negative Bacteremia; Randomized Clinical Trial

$1,908,674

Avian influenza suRveillance in Companion animal and Human healthcare settings [ARCH]

Co-investigatorCIHR2024Catalyst Grant: Avian Influenza OneHealth Research

Principal investigators: Fralick, Michael P; Hug, Laura A; Kassen, Rees; MacFadden, Derek R; Nott, Caroline; Wong, Alex

Keywords: Animal Shelters; Avian Influenza A; Environmental Surface Surveillance; H5n1; Hospitals; One Health; Pandemic Surveillance; Veterinary Clinics; Whole Genome Sequencing; Wildlife Rehabilitation

$150,000

Evaluating the impact of a SIMPlified LaYered consent process versus a conventional informed consent form on recruitment of potential participants to a large platform clinical trial: a pragmatic nested randomized controlled trial (SIMPLY-SNAP Trial) - Full Proposal

Principal investigatorCIHR2023Project Grant

Principal investigators: Daneman, Nick; Cheng, Matthew P; Johnstone, Jennie; Lee, Todd C; McDonald, Emily G; Ong, Sean W; Tong, Steven

Keywords: Informed Consent; Patient Education; Process Measures; Randomized Clinical Trials

$149,176

Surveillance of Healthcare and Ambient Pathogens in our Environments and Spaces [SHAPES]

Co-investigatorCIHR2023Project Grant - PA: Pandemic Preparedness and Health Emergencies Research

Principal investigators: Fralick, Michael P; Kassen, Rees; MacFadden, Derek R; Nott, Caroline; Wong, Alex

Keywords: Covid-19; Environmental Surveillance; Influenza; Long-Term Care Homes; Pathogen Surveillance; Respiratory Syncytial Virus (Rsv); Sars-Cov-2

$100,000

Nirmatrelvir/ritonavir (Paxlovid) in the prevention of long-term cardiovascular outcomes: The paxloviD Effectiveness For the prEvention of loNg coviD (DEFEND) clinical trial.

Principal investigatorCIHR2023Project Grant - PA: Pandemic Preparedness and Health Emergencies Research

Principal investigators: Quinn, Kieran L; Cheung, Angela M; Fowler, Robert A; Hebert, Paul C; Johnstone, Jennie; Lee, Douglas S; Razak, Fahad; Taljaard, Monica; Verma, Amol

Keywords: Chronic Cardiovascular Disease; Long Covid; Nirmatrelvir/Ritonavir; Paxlovid; Post Acute Sequelae Of Covid-19; Post Covid-19 Condition; Prevention; Sars-Cov-2 Infection

$100,000

Surveillance of Healthcare and Ambient Pathogens in our Environments and Spaces [SHAPES]

Co-investigatorCIHR2022Project Grant - PA: Pandemic Preparedness and Health Emergencies Research

Principal investigators: Fralick, Michael P; Castellani, Lucas; Hug, Laura A; Kassen, Rees; MacFadden, Derek R; Nott, Caroline; Thampi, Nisha; Wong, Alex

Keywords: Clostridioides Difficile (C. Difficile); Covid-19; Environmental Surveillance; Influenza; Long-Term Care Homes; Nosocomial Infections; Pathogen Surveillance; Respiratory Syncytial Virus (Rsv); Sars-Cov-2; Vancomycin-Resistant Enterococcus (Vre)

$100,000

BALANCE+: A Platform Trial for Gram Negative Bloodstream Infections

Principal investigatorCIHR2022Operating Grant: Clinical Trials Projects - Indirect Costs

Principal investigators: Daneman, Nick; Murthy, Srinivas; Yamamura, Deborah L; Fowler, Robert A; Johnstone, Jennie; Lee, Todd C; MacFadden, Derek R; McDonald, Emily G; Paterson, David L; Rogers, Benjamin A; Yahav, Dafna

Keywords: Adaptive Platform Trial; Antibiotic De-Escalation; Antibiotic Step-Down; Antimicrobial Resistance; Bloodstream Infection; Central Venous Catheter Infection; Gram Negative Bacteremia; Randomized Controlled Trial

$729,947

Antimicrobial Resistant Organism Decolonization After Microbiome Perturbation (ARO-DECAMP)

Co-investigatorCIHR2022Operating Grant: Clinical Trials Projects - Indirect Costs

Principal investigators: Coburn, Bryan A; Hota, Susy S; Kain, Kevin C; MacFadden, Derek R; Walmsley, Sharon L

Keywords: Antimicrobial Resistance; Clinical Trial; Infection; Microbiome

$173,934

ICU-ROOM : Intensive Care Unit Rooms, Objectified, Observed and Measured.

Co-investigatorCIHR2022Project Grant

Principal investigators: Parshuram, Christopher S

Keywords: Adverse Events; Critical Illness; Design; Environment; Patient Safety; Policy

$1,392,301

Antimicrobial Resistant Organism Decolonization After Microbiome Perturbation (ARO-DECAMP)

Co-investigatorCIHR2022Operating Grant: Clinical Trials Projects

Principal investigators: Coburn, Bryan A; Hota, Susy S; Kain, Kevin C; MacFadden, Derek R; Walmsley, Sharon L

Keywords: Antimicrobial Resistance; Clinical Trial; Infection; Microbiome

$695,739

From CIHR, NSERC and SSHRC funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998, including their latest published competition results.

Profile data last refreshed on July 30, 2025 from the university directory, publication records and CIHR, NSERC and SSHRC funding.

Something wrong or missing on this profile? Suggest a correction

Jennie Johnstone

Research

Latest papers

Latest funding

Cefazolin for Methicillin-Susceptible Staphylococcus aureus Bacteremia

Mapping Reported Modes of Transmission of Highly Pathogenic Avian Influenza A (H5N1) to Humans: A Scoping Review

Factors associated with severe health outcomes among community-dwelling older adults hospitalized with respiratory syncytial virus

Incidence of colonization and infection with carbapenemase-producing Enterobacterales in Toronto and Peel Region, Ontario, 2007-2024.

Identification of plasmid-mediated tigecycline resistance tet(x4) and New Delhi metallo-&#x3b2;-lactamase (NDM) in an Escherichia coli isolate from Canada.

An interrupted time-series analysis assessing the association of the COVID-19 pandemic on healthcare-associated infections and antimicrobial-resistant organisms in Canadian acute care hospitals, 2018-2022.

Surveillance for Health Care-Associated Infections, Antimicrobial Resistant Organisms and Antimicrobial use in Canadian Long-Term Care Homes: A Cross-Sectional Survey.

Clinician survey for the management of central venous catheter-related bloodstream infection: Catheter retention versus replacement.

Invasive Group A Streptococcal Infection in Children, 1992-2023

Oseltamivir Reduces 30-Day Mortality in Older Adults With Influenza: A Pooled Analysis From the 2012–2019 Serious Outcomes Surveillance Network of the Canadian Immunization Research Network

Frequent collaborators

Nick Daneman

Allison McGeer

Deborah Cook

Diane Heels-Ansdell

Bradley Langford

Gary Garber

Gary Garber

Erick Duan

Bram Rochwerg

Mark Loeb

Joanna Dionne

Dominik Mertz

Lehana Thabane

John Marshall

Timothy A Karachi

Michael Surette

John Muscedere

Dawn Bowdish

Irene Armstrong

Samira Mubareka

Makeda Semret

Maureen Meade

Bradley Langford

Michael Fralick

Derek MacFadden

Anne McCarthy

Ian Ball

Michelle Murti

Kathryn Suh

Shelly Bolotin

Liane Macdonald

Dave Nagpal

Pavlos Bobos

Ramzi Fattouh

Tiffany Fitzpatrick

Stephen Lapinsky

Rahim Moineddin

Sheila Riazi

John Snelgrove

Elissa Rennert-May

Identification of plasmid-mediated tigecycline resistance tet(x4) and New Delhi metallo-β-lactamase (NDM) in an Escherichia coli isolate from Canada.