Faculty profile

Jeff Powis

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Assistant ProfessorDepartment of MedicineUniversity of Toronto

Jeff Powis

Assistant Professor

Department of Medicine

Temerty Faculty of Medicine

University of Toronto

Toronto, Ontario, Canada

Supervision signals

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5 publications in the last five years, latest in 2026.

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Academic metrics

Publications

541

Citations

Collaborators

Grants

Publications by year

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Profiles and links

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Research

Read how they describe their research on their University of Toronto profile.

Latest papers

Assessment of air handling unit to improve ventilation in congregate living settings: a multicenter cross-sectional study.
Infection control and hospital epidemiology · 2026
Risk mitigation of shared room ventilation and filtration on SARS-CoV-2 transmission: a multicenter test-negative study.
Infection control and hospital epidemiology · 2025
Validation of oral-nasal specimen collection for influenza and respiratory syncytial virus detection.
Antimicrobial stewardship & healthcare epidemiology : ASHE · 2025

All 15 publications

Latest funding

From Knowledge to Action: Mobilizing the Women-Centred HIV Care Clinic Implementation Package (W-CIP) in Ontario and Quebec using RE-AIM
CIHR · 2026 · Co-investigator
$975,376
BALANCE+: A Platform Trial for Gram Negative Bloodstream Infections
CIHR · 2022 · Co-investigator
$2,919,785
BALANCE+: A Platform Trial for Gram Negative Bloodstream Infections
CIHR · 2022 · Co-investigator
$729,947

All 13 grants and awards

15 publications.

Assessment of air handling unit to improve ventilation in congregate living settings: a multicenter cross-sectional study.

Chan CK, Tan C, Candon H, Crittenden M, McRitchie M, Callahan J, Powis J, Leis JA

Infection control and hospital epidemiology2026

DOI: 10.1017/ice.2026.10458 PMID: 42109127

Risk mitigation of shared room ventilation and filtration on SARS-CoV-2 transmission: a multicenter test-negative study.

Williams V, Schwartz KL, Brown K, Muller M, Powis J, Ricciuto D, Kiss A, Downing M, Sukhdeo S, Dashwood T, Romano J, Kozak R, Maze Dit Mieusement L, Leis JA

Infection control and hospital epidemiology20253 citationsOpen Access

DOI: 10.1017/ice.2025.10256 PMID: 40928142

Validation of oral-nasal specimen collection for influenza and respiratory syncytial virus detection.

Young M, Suico Y, Vojdani OK, McCready J, Katz K, Pourmatin S, Rahimi M, Vermeiren C, Powis J, Kandel C

Antimicrobial stewardship & healthcare epidemiology : ASHE2025

DOI: 10.1017/ash.2025.66 PMID: 40290178

A retrospective global study of the prevalence of O-serotypes of invasive Escherichia coli disease in patients admitted to tertiary care hospitals.

Geurtsen J, Doua J, Martinez-Martinez L, Ibarra de Palacios P, Powis J, Sims M, Hermans P, Barraud O, Lanotte P, Thaden J, Go O, Spiessens B, Abbanat D, Wagenlehner F, Matsumoto T, Bonten M, Sarnecki M, Poolman J, BAC0006 Study Group as instructed by the Study Steering Committee

Epidemiology and infection2025

DOI: 10.1017/s0950268825100344 PMID: 40898705

Assessing a safety climate tool adapted to address respiratory illnesses in Canadian hospitals

Jiang L, Muller M, McGeer A, Simor A, Holness DL, Coleman KKL, Katz K, Loeb M, McNeil S, Nichol K

Antimicrobial Stewardship & Healthcare Epidemiology2024Open Access

DOI: 10.1017/ash.2024.426

Peginterferon lambda for the treatment of outpatients with COVID-19: a phase 2, placebo-controlled randomised trial

Feld JJ, Kandel C, Biondi MJ, Kozak RA, Zahoor MA, Lemieux C, Borgia SM, Boggild AK, Powis J, McCready J

The Lancet Respiratory Medicine2021234 citationsOpen Access

DOI: 10.1016/s2213-2600(20)30566-x PMID: W3127381644

Pathways From HIV-Related Stigma to Antiretroviral Therapy Measures in the HIV Care Cascade for Women Living With HIV in Canada

Logie CH, Lacombe-Duncan A, Wang Y, Kaida A, Conway T, Webster K, de Pokomandy A, Loutfy MR, Anema A, Becker D

Journal of acquired immune deficiency syndromes (1999)201866 citationsOpen Access

DOI: 10.1097/qai.0000000000001589

Factors associated with influenza vaccination among healthcare workers in acute care hospitals in Canada

Hussain H, McGeer A, McNeil S, Katz K, Loeb M, Simor A, Powis J, Langley J, Muller M, Group TCHCWS

Influenza and Other Respiratory Viruses201820 citationsOpen Access

DOI: 10.1111/irv.12545

Impact of two-step urine culture ordering in the emergency department: a time series analysis.

Stagg A, Lutz H, Kirpalaney S, Matelski JJ, Kaufman A, Leis J, McCready J, Powis J

BMJ quality & safety2018Senior author

DOI: 10.1136/bmjqs-2016-006250 PMID: 28468911

Every antibiotic, every day: Maximizing the impact of prospective audit and feedback on total antibiotic use

Tonya J. Campbell, Melissa Decloe, Suzanne Gill, Grace Ho, Janine McCready, Jeff E. Powis

PLoS ONE201727 citationsSenior authorOpen Access

DOI: 10.1371/journal.pone.0178434 PMID: 28562638

From Knowledge to Action: Mobilizing the Women-Centred HIV Care Clinic Implementation Package (W-CIP) in Ontario and Quebec using RE-AIM

Co-investigatorCIHR2026Project Grant

Principal investigators: Loutfy, Mona R; Boucoiran, Isabelle; Lacombe-Duncan, Ashley; tshinkenke, noemi; Ulusow, Asha M

Keywords: Community-Based Research; Hiv; Implementation Science; Women'S Health

$975,376

BALANCE+: A Platform Trial for Gram Negative Bloodstream Infections

Co-investigatorCIHR2022Operating Grant: Clinical Trials Projects

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

$2,919,785

BALANCE+: A Platform Trial for Gram Negative Bloodstream Infections

Co-investigatorCIHR2022Operating Grant: Clinical Trials Projects - Indirect Costs

$729,947

COVID-19 Variant Network - Are healthcare workers at higher risk of COVID-19 than other working adults?

Co-investigatorCIHR2021Operating Grant: SARS-CoV-2 variants supplement stream 2

Principal investigators: McGeer, Allison J; Brown, Kevin A; Buchan, Sarah; Coleman, Brenda L; Manuel, Douglas G; Mishra, Sharmistha; Patel, Samir; Sander, Beate H

Keywords: Adult; Covid-19; Healthcare Workers; Incidence; Propective Cohort; Risk Factors For Infection

$100,000

Risk of Environmental Surface and Air Contamination in COVID-19 Caused by Variant Viruses (RISC-COV-Variants)

Co-investigatorCIHR2021Operating Grant: Emerging COVID-19 Research Gaps and Priorities - Variants

Principal investigators: McGeer, Allison J; Gingras, Anne-Claude; Mubareka, Samira

Keywords: Covid-19; Diagnosis; Transmission; Variants Of Concern

$498,969

Are healthcare workers at higher risk of COVID-19 than other working adults?

Co-investigatorCIHR2020Op Grant: COVID-19 Rapid Research FO - Social Policy and Public Health Responses

Principal investigators: McGeer, Allison J; Coleman, Brenda L

Keywords: Adult; Covid-19; Healthcare Workers; Incidence; Propective Cohort; Risk Factors For Infection

Study of Post-Hospital care for Opioid Overdoses that are Non-Fatal (SPOON)

Co-investigatorCIHR2019Project Grant

Principal investigators: Bayoumi, Ahmed M; Leece, Pamela

Keywords: Access To Care; Addictions Services; Disparities In Care; Harm Reduction; Opioid Use; Primary Care Engagement

$459,000

PReventing the Emergence of CPE In hospitalS: understanding key Epidemiologic parameters (PRECISE)

Co-investigatorCIHR2018Project Grant

Principal investigators: McGeer, Allison J

Keywords: Antibiotic Resistance; Infectious Disease; Patient Safety

$879,750

Initial vancomycin taper for the prevention of recurrent Clostridium difficile infection

Co-investigatorCIHR2018Project Grant

Principal investigators: Lee, Todd C; McDonald, Emily G

Keywords: Clostridium Dificile; Prevention; Recurrence; Vancomycin

$378,676

Understanding the treatment benefits of novel antiviral agents for hepatitis C: quality of life, health utility, cost, and return to work

Co-investigatorCIHR2016Project Grant

Principal investigators: Wong, William Wai Lun; Krahn, Murray D

Keywords: Cost-Effectiveness; Direct-Acting Antiviral Therapies; Hepatitis C; Out-Of-Pocket Costs; Preferences; Quality Of Life; Time Costs; Utility

$470,169

From public funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998 with their latest competition results, the Canada Foundation for Innovation, Genome Canada, the Canadian Space Agency, Canada Research Chairs, the Fonds de recherche du Québec, Ontario research funding, Michael Smith Health Research BC, the Canadian Cancer Society, Heart & Stroke and Brain Canada.

Profile data last refreshed on September 29, 2026 from the university directory, publication records and public research funding records.

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Jeff Powis

Research

Latest papers

Latest funding

Assessment of air handling unit to improve ventilation in congregate living settings: a multicenter cross-sectional study.

Risk mitigation of shared room ventilation and filtration on SARS-CoV-2 transmission: a multicenter test-negative study.

Validation of oral-nasal specimen collection for influenza and respiratory syncytial virus detection.

A retrospective global study of the prevalence of O-serotypes of invasive Escherichia coli disease in patients admitted to tertiary care hospitals.

Assessing a safety climate tool adapted to address respiratory illnesses in Canadian hospitals

Peginterferon lambda for the treatment of outpatients with COVID-19: a phase 2, placebo-controlled randomised trial

Pathways From HIV-Related Stigma to Antiretroviral Therapy Measures in the HIV Care Cascade for Women Living With HIV in Canada

Factors associated with influenza vaccination among healthcare workers in acute care hospitals in Canada

Impact of two-step urine culture ordering in the emergency department: a time series analysis.

Every antibiotic, every day: Maximizing the impact of prospective audit and feedback on total antibiotic use

Frequent collaborators

Janine McCready

Kevin Katz

Matthew Muller

Andrew Simor

Shelly McNeil

Allison McGeer

Mark Loeb

Zoe Dodd

Christopher Kandel

Sanjeev Sockalingam

Jerome Leis

Danielle Rouleau

Sean Rourke

Deborah Money

Mona Loutfy

Janet Raboud

Marina Klein

Neora Pick

Viviane Lima

Peter Coyte

Joanne Langley

Christos Tsoukas

Gina Ogilvie