V. Leung

Most-cited papers

1. Bacterial co-infection and secondary infection in patients with COVID-19: a living rapid review and meta-analysis

   B. Langford, M. So, S. Raybardhan, V. Leung +4 more

   2020Clinical Microbiology and Infection1,398 citations Open access

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2. Antibiotic prescribing in patients with COVID-19: rapid review and meta-analysis

   B. Langford, M. So, S. Raybardhan, V. Leung +4 more

   2021Clinical Microbiology and Infection789 citations Open access

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3. Antibiotic resistance associated with the COVID-19 pandemic: a systematic review and meta-analysis

   B. Langford, Jean-Paul R. Soucy, V. Leung, M. So +6 more

   2022Clinical Microbiology and Infection227 citations Open access

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4. Antimicrobial resistance in patients with COVID-19: a systematic review and meta-analysis

   B. Langford, M. So, M. Simeonova, V. Leung +12 more

   2023The Lancet Microbe137 citations Open access

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5. Estimating daily antibiotic harms: an umbrella review with individual study meta-analysis.

   J. Curran, Jennifer Lo, V. Leung, K. Brown +5 more

   2021Clinical Microbiology and Infection116 citations Open access

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6. Unnecessary antibiotic prescribing in a Canadian primary care setting: a descriptive analysis using routinely collected electronic medical record data.

   K. Schwartz, B. Langford, N. Daneman, Branson Chen +10 more

   2020CMAJ Open75 citations Open access

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7. Predictors and microbiology of respiratory and bloodstream bacterial infection in patients with COVID-19: living rapid review update and meta-regression

   B. Langford, M. So, V. Leung, S. Raybardhan +7 more

   2021Clinical Microbiology and Infection72 citations Open access

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8. Population-based evaluation of the effectiveness of nirmatrelvir–ritonavir for reducing hospital admissions and mortality from COVID-19

   K. L. Schwartz, Jun Wang, Mina Tadrous, B. Langford +6 more

   2023Canadian Medical Association Journal71 citations Open access

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9. Effect of Antibiotic-Prescribing Feedback to High-Volume Primary Care Physicians on Number of Antibiotic Prescriptions: A Randomized Clinical Trial.

   K. Schwartz, N. Ivers, B. Langford, M. Taljaard +11 more

   2021JAMA Internal Medicine55 citations Open access

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10. Community pharmacist prescribing of antimicrobials: A systematic review from an antimicrobial stewardship perspective

    J. H. Wu, F. Khalid, B. Langford, Nathan P. Beahm +4 more

    2021Canadian Pharmacists Journal / Revue des Pharmaciens du Canada53 citations Open access

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11. The Impact of COVID-19 on Outpatient Antibiotic Prescriptions in Ontario, Canada; An Interrupted Time Series Analysis

    T. Kitano, K. Brown, N. Daneman, D. Macfadden +11 more

    2021Open Forum Infectious Diseases44 citations Open access

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12. Potential Negative Effects of Antimicrobial Allergy Labelling on Patient Care: A Systematic Review.

    J. H. Wu, B. Langford, K. Schwartz, R. Zvonar +3 more

    2018The Canadian Journal of Hospital Pharmacy42 citations Open access

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13. Cognitive bias: how understanding its impact on antibiotic prescribing decisions can help advance antimicrobial stewardship.

    B. Langford, N. Daneman, V. Leung, Dale J. Langford

    2020JAC-Antimicrobial Resistance39 citations Open access

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14. Growing a "positive culture" of antimicrobial stewardship in a community hospital.

    V. Leung, Suzanne Gill, J. Sauve, K. Walker +2 more

    2011The Canadian Journal of Hospital Pharmacy38 citations Open access

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15. Canadian community pharmacists’ use of digital health technologies in practice

    V. Leung, S. Tharmalingam, J. Cooper, Maureen Charlebois

    2016Canadian Pharmacists Journal / Revue des Pharmaciens du Canada31 citations Open access

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16. Metrics for evaluating antibiotic use and prescribing in outpatient settings.

    V. Leung, B. Langford, Rita Ha, K. Schwartz

    2021JAC-Antimicrobial Resistance26 citations Open access

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17. The Association between High and Unnecessary Antibiotic Prescribing: A Cohort Study Using Family Physician Electronic Medical Records.

    T. Kitano, B. Langford, K. Brown, A. Pang +10 more

    2020Clinical Infectious Diseases26 citations Open access

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18. Validating a popular outpatient antibiotic database to reliably identify high prescribing physicians for patients 65 years of age and older

    K. Schwartz, Cynthia Chen, B. Langford, K. Brown +5 more

    2019PLoS ONE24 citations Open access

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19. Reducing unnecessary urine culturing and antibiotic overprescribing in long-term care: a before-and-after analysis.

    K. Brown, Andrea Chambers, S. MacFarlane, B. Langford +4 more

    2019CMAJ Open23 citations Open access

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20. Virtual learning collaboratives to improve urine culturing and antibiotic prescribing in long-term care: controlled before-and-after study

    Andrea Chambers, Cynthia Chen, K. Brown, N. Daneman +9 more

    2021BMJ Quality & Safety22 citations Open access

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21. Documenting the indication for antimicrobial prescribing: a scoping review

    Sharon Saini, V. Leung, Elizabeth Si, Certina Ho +10 more

    2022BMJ Quality & Safety14 citations

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22. Evaluating Antimicrobial Use and Spectrum of Activity in Ontario Hospitals: Feasibility of a Multicentered Point Prevalence Study

    V. Leung, Michael Li, J. H. Wu, B. Langford +7 more

    2018Open Forum Infectious Diseases14 citations Open access

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23. Landscape of antimicrobial stewardship programs in Ontario: a survey of hospitals.

    V. Leung, J. H. Wu, B. Langford, G. Garber

    2018CMAJ Open13 citations Open access

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24. Conversion from epoetin alfa to darbepoetin alfa: effects on patients' hemoglobin and costs to canadian dialysis centres.

    Jessica Jordan, Joanne Breckles, V. Leung, M. Hopkins +1 more

    2012The Canadian Journal of Hospital Pharmacy12 citations Open access

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25. The second-hand effects of antibiotics: communicating the public health risks of drug resistance.

    B. Langford, N. Daneman, V. Leung, J.-H.-C. Wu +3 more

    2019JAC-Antimicrobial Resistance11 citations Open access

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26. Perioperative Medication Management (POMM) Pilot: Integrating a Community-Based Medication History (MedsCheck) into Medication Reconciliation for Elective Orthopedic Surgery Inpatients

    V. Leung, K. Mach, Emily C. Charlesworth, Sandy Hicks +2 more

    201010 citations

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27. Coronavirus Disease 2019 Vaccination Is Associated With Reduced Outpatient Antibiotic Prescribing in Older Adults With Confirmed Severe Acute Respiratory Syndrome Coronavirus 2: A Population-Wide Cohort Study

    D. Macfadden, C. Maxwell, D. Bowdish, S. Bronskill +18 more

    2023Clinical Infectious Diseases9 citations Open access

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28. Optimizing responsiveness to feedback about antibiotic prescribing in primary care: protocol for two interrelated randomized implementation trials with embedded process evaluations

    J. Shuldiner, K. Schwartz, B. Langford, N. Ivers +25 more

    2022Implementation Science7 citations Open access

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29. Assessing the impact of antibiotic stewardship program elements on antibiotic use across acute-care hospitals: an observational study

    B. Langford, J. H. Wu, K. Brown, Xuesong Wang +4 more

    2018Infection control and hospital epidemiology7 citations

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30. A cross-sectional study of hospital antimicrobial stewardship programmes in the COVID-19 era.

    V. Leung, J. Quirk, Sarah Muir, N. Daneman +2 more

    2023JAC-Antimicrobial Resistance6 citations Open access

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31. Impact of Early Electronic Prescribing on Pharmacists’ Clarification Calls in Four Community Pharmacies Located in St John’s, Newfoundland

    J. Phillips, J. Shea, V. Leung, D. MacDonald

    2015JMIR Medical Informatics6 citations Open access

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32. Antibiotic prescribing guideline recommendations in COVID-19: a systematic survey

    B. Langford, V. Leung, Jennifer Lo, E. Akl +6 more

    2023EClinicalMedicine5 citations Open access

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33. Drug information systems: evolution of benefits with system maturity.

    V. Leung, Simon Hagens, J. Zelmer

    2013Healthcare Quarterly5 citations

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34. Variability in changes in physician outpatient antibiotic prescribing from 2019 to 2021 during the COVID-19 pandemic in Ontario, Canada

    P. Tandon, K. Brown, N. Daneman, Bradley J. Langford +3 more

    2023Antimicrobial Stewardship and Healthcare Epidemiology4 citations Open access

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35. Development of a provincial interactive antibiogram tool for Ontario.

    Jennifer Lo, B. Langford, V. Leung, Rita Ha +6 more

    2021Journal of the Association of Medical Microbiology and Infectious Disease Canada = Journal officiel de l'Association pour la microbiologie medicale et l'infectiologie Canada4 citations Open access

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36. Shared decision making and antibiotic stewardship: Will pharmacists rise to the challenge?

    Li-Na Ko, Rita Ha, V. Leung, B. Langford

    2020Canadian Pharmacists Journal / Revue des Pharmaciens du Canada4 citations Open access

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37. Shorter versus longer durations of antibiotic treatment for pneumonia in dogs and cats: a systematic review and meta-analysis.

    F. Emdin, Abby Emdin, Sean W. X. Ong, V. Leung +6 more

    2026Journal of the American Veterinary Medical Association3 citations Open access

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38. Short versus longer duration antibiotic treatment for urinary tract infections in companion animals: a systematic review and meta-analysis

    F. Emdin, Sean W. X. Ong, Clare McGall, V. Leung +5 more

    2025BMC Veterinary Research2 citations Open access

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39. Documenting the indication for antimicrobial prescribing: A retrospective observational study of long‐term care homes

    Kayuri Champaneria, Bradley J. Langford, J. Allen, K. Brown +3 more

    2024Journal of The American Geriatrics Society2 citations Open access

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40. Predictors and microbiology of respiratory and bloodstream bacterial infection in patients with COVID-19: author's response

    B. Langford, M. So, V. Leung, S. Raybardhan +6 more

    2022Clinical Microbiology and Infection2 citations Open access

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41. Resourcing for hospital antibiotic stewardship programs is associated with higher participation in antimicrobial use tracking: a cross-sectional study

    Bradley J. Langford, Sera Thomas, K. Brown, N. Daneman +2 more

    2025Antimicrobial Stewardship and Healthcare Epidemiology1 citations Open access

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42. Exploring variability in antibiograms: a cross-sectional study

    V. Leung, M. Alameri, Huda Almohri, Kevin A. Brown +5 more

    2025JAC-Antimicrobial Resistance1 citations Open access

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43. Hospital antimicrobial stewardship funding and resourcing impact on broad-spectrum antibiotic use: a cross-sectional study

    Megan M. Tu, Zong-Heng Shi, V. Leung, Kevin A. Brown +3 more

    2024Antimicrobial Stewardship and Healthcare Epidemiology1 citations Open access

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44. Antibiotic Resistance associated with the COVID-19 Pandemic: A Rapid Systematic Review

    Bradley J. Langford, Jean-Paul R. Soucy, V. Leung, M. So +6 more

    2022medRxiv1 citations Open access

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45. Concordance between high antibiotic prescribing and high opioid prescribing among primary care physicians: a cross-sectional study

    B. Langford, Cynthia Chen, N. Daneman, K. Brown +6 more

    2021CMAJ Open1 citations Open access

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46. P-1782. Antimicrobial Stewardship Program Resourcing across Hospitals over Time: A Repeated Cross-Sectional Study

    V. Leung, Sera Thomas, K. Brown, N. Daneman +2 more

    2025Open Forum Infectious Diseases0 citations Open access

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47. Cognitive bias: how understanding its impact on antibiotic prescribing decisions can help advance antimicrobial stewardship

    B. Langford, N. Daneman, V. Leung, Dale J. Langford

    20200 citations

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48. Pilot study of an online hospital antibiotic use tracking and reporting system.

    B. Langford, J. H. Wu, Jennifer Lo, V. Leung +3 more

    2019Journal of the Association of Medical Microbiology and Infectious Disease Canada = Journal officiel de l'Association pour la microbiologie medicale et l'infectiologie Canada0 citations Open access

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49. The Ontario Program To Improve AntiMIcrobial USE (OPTIMISE): A Descriptive Analysis of Dispensed Antibiotics

    K. Schwartz, C. Achonu, K. Brown, G. Garber +4 more

    2017Open Forum Infectious Diseases0 citations Open access

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50. Outcomes of a Provincial Pilot Program to Reduce Unnecessary Urine Culturing and Antibiotic Overuse in Long-term Care

    K. Brown, Andrea Chambers, V. Leung, B. Langford +2 more

    20170 citations Open access

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