Derek MacFadden

Adjunct Scientist (Full Status) ICES uOttawa Populations & Public Health Research Program

PhD, Epidemiology, Harvard Chan School of Public Health
FRCPC, Infectious Diseases, University of Toronto
FRCPC, Internal Medicine, University of Toronto
MD, University of Toronto

Infectious diseases
Health services research

Clinician Scientist, The Ottawa Hospital Research Institute

Journal Articles

Journal Article

28/02/2025

Patterns of outpatient antibiotic prescribing in older adults by social determinants of healthcare access: a population-based retrospective cohort study

Sapin ME, Maxwell CJ, Clarke AE, Cooper C, So M, Schwartz KL, Daneman N, Mishra S, MacFadden D. Clin Microbiol Infect. 2025; S1198-743X(25)00086-2.

Journal Article

02/12/2024

Long-term risk of infection among patients colonized with antimicrobial-resistant pathogens: a population-wide cohort study

Blagojevic C, Brown KA, Diong C, Fridman DJ, Johnstone J, Langford BJ, Lee SM, MacFadden DR, Schwartz KL, Daneman N. Open Forum Infect Dis. 2024 Dec 2; 11(12):ofae712.

Journal Article

03/07/2024

Epidemiology and clinical relevance of persistent bacteraemia in patients with Gram-negative bloodstream infection: a retrospective cohort study

Ong SWX, Luo J, Fridman DJ, Lee SM, Johnstone J, Schwartz KL, Diong C, Patel SN, Macfadden DR, Langford BJ, Tong SYC, Brown KA, Daneman N. J Antimicrob Chemother. 2024; Jul 3 [Epub ahead of print].

Journal Article

17/05/2024

Association between infectious diseases consultation and mortality in hospitalized patients with Gram-negative bloodstream infection: a retrospective population-wide cohort study

Ong SWX, Luo J, Fridman DJ, Lee SM, Johnstone J, Schwartz KL, Diong C, Patel SN, MacFadden DR, Langford BJ, Tong SYC, Brown KA, Daneman N. Clin Infect Dis. 2024; May 17 [Epub ahead of print].

Journal Article

03/05/2024

The effect of COVID-19 vaccination on outpatient antibiotic prescribing in older adults: a self-controlled risk-interval study

Jorgensen SCJ, Brown K, Clarke AE, Schwartz KL, Maxwell C, Daneman N, Kwong JC, MacFadden DR. Clin Infect Dis. 2024; May 3 [Epub ahead of print].

Journal Article

27/03/2024

Follow-up blood cultures do not reduce mortality in hospitalized patients with Gram-negative bloodstream infection: a retrospective population-wide cohort study

Ong SWX, Luo J, Fridman DJ, Lee SM, Johnstone J, Schwartz KL, Diong C, Patel SN, MacFadden D, Langford B, Tong SYC, Brown KA, Daneman N. Clin Microbiol Infect. 2024; Mar 27 [Epub ahead of print].

Journal Article

17/11/2023

The impact of the COVID-19 pandemic on blood culture practices and bloodstream infections

Driedger M, Daneman N, Brown K, Gold WL, Jorgensen SCJ, Maxwell C, Schwartz KL, Morris AM, Thiruchelvam D, Langford B, Leung E, MacFadden D. Microbiol Spectr. 2023; Nov 17 [Epub ahead of print].

Journal Article

07/10/2022

Highly versus less bioavailable oral antibiotics in the treatment of gram negative bloodstream infections: a propensity-matched cohort analysis

Mponponsuo K, Brown KA, Fridman DJ, Johnstone J, Langford BJ, Lee SM, MacFadden DR, Patel SN, Schwartz KL, Daneman N. Clin Microbiol Infect. 2023; 29(4):490-7. Epub 2022 Oct 7.

Journal Article

29/03/2022

Screening large population health databases for potential coronavirus disease 2019 therapeutics: a pharmacopeia-wide association study of commonly prescribed medications

MacFadden DR, Brown K, Buchan SA, Chung H, Kozak R, Kwong JC, Manuel D, Mubareka S, Daneman N. Open Forum Infect Dis. 2022; 9(5):ofac156. Epub 2022 Mar 29.

Journal Article

07/03/2022

Prevalence and mortality associated with bloodstream organisms: a population-wide retrospective cohort study

Verway M, Brown KA, Marchand-Austin A, Diong C, Lee S, Langford B, Schwartz KL, MacFadden DR, Patel SN, Sander B, Johnstone J, Garber G, Daneman N. J Clin Microbiol. 2022; 60(4):e0242921. Epub 2022 Mar 7.

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Derek MacFadden

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Derek MacFadden

Education

Research Focus

Other Affiliations

Journal Articles

Patterns of outpatient antibiotic prescribing in older adults by social determinants of healthcare access: a population-based retrospective cohort study

Long-term risk of infection among patients colonized with antimicrobial-resistant pathogens: a population-wide cohort study

Epidemiology and clinical relevance of persistent bacteraemia in patients with Gram-negative bloodstream infection: a retrospective cohort study

Association between infectious diseases consultation and mortality in hospitalized patients with Gram-negative bloodstream infection: a retrospective population-wide cohort study

The effect of COVID-19 vaccination on outpatient antibiotic prescribing in older adults: a self-controlled risk-interval study

Follow-up blood cultures do not reduce mortality in hospitalized patients with Gram-negative bloodstream infection: a retrospective population-wide cohort study

The impact of the COVID-19 pandemic on blood culture practices and bloodstream infections

Highly versus less bioavailable oral antibiotics in the treatment of gram negative bloodstream infections: a propensity-matched cohort analysis

Screening large population health databases for potential coronavirus disease 2019 therapeutics: a pharmacopeia-wide association study of commonly prescribed medications

Prevalence and mortality associated with bloodstream organisms: a population-wide retrospective cohort study

Get in touch with
Derek MacFadden

Derek MacFadden

Education

Research Focus

Other Affiliations

Journal Articles

Patterns of outpatient antibiotic prescribing in older adults by social determinants of healthcare access: a population-based retrospective cohort study

Long-term risk of infection among patients colonized with antimicrobial-resistant pathogens: a population-wide cohort study

Epidemiology and clinical relevance of persistent bacteraemia in patients with Gram-negative bloodstream infection: a retrospective cohort study

Association between infectious diseases consultation and mortality in hospitalized patients with Gram-negative bloodstream infection: a retrospective population-wide cohort study

The effect of COVID-19 vaccination on outpatient antibiotic prescribing in older adults: a self-controlled risk-interval study

Follow-up blood cultures do not reduce mortality in hospitalized patients with Gram-negative bloodstream infection: a retrospective population-wide cohort study

The impact of the COVID-19 pandemic on blood culture practices and bloodstream infections

Highly versus less bioavailable oral antibiotics in the treatment of gram negative bloodstream infections: a propensity-matched cohort analysis

Screening large population health databases for potential coronavirus disease 2019 therapeutics: a pharmacopeia-wide association study of commonly prescribed medications

Prevalence and mortality associated with bloodstream organisms: a population-wide retrospective cohort study

Get in touch with Derek MacFadden

Get in touch with
Derek MacFadden