Faculty profile

Oscar Larios

ResearcherMedical MicrobiologyUniversity of Calgary

This profile is built from public research funding records (CIHR, NSERC and SSHRC) and PubMed. We have not imported them from a University of Calgary directory, so their courses and email address may be missing. Find their university profile.

Oscar Larios

Researcher

Medical Microbiology

Health Sciences

University of Calgary

Calgary, Alberta, Canada

Supervision signals

Has led research grants, which requires an independent research appointment. Ask their department whether they supervise graduate students.
8 publications in the last five years, latest in 2026.
Senior (last) author on 1 recent paper, a sign of leading a research group.
Principal investigator on 1 research grant (1 CIHR), most recently in 2016.

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

Citations

Collaborators

Grants

Publications by year

Counts cover the publications linked to this profile. Citations and the h-index appear when the source records them.

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Signals and details

Research

Diagnostics Health Outcomes Infection Control Microbiology

Latest papers

Longitudinal wastewater-based surveillance of vancomycin-resistant Enterococci in tertiary-care hospitals.
The Science of the total environment · 2026
Analysis of invasive group A streptococcal puerperal sepsis in Calgary, Alberta: clinical consequences and policy implications
Infection Control and Hospital Epidemiology · 2024
Misattribution Bias of COVID-19 Hospitalizations in Alberta Using an Admission Algorithm.
Journal of the Association of Medical Microbiology and Infectious Disease Canada = Journal officiel de l'Association pour la microbiologie medicale et l'infectiologie Canada · 2024

All 11 publications

Latest funding

Policy Implementation and Communication Lessons from Alberta's Acute and Primary Care Environments During the COVID-19 Response
CIHR · 2020 · Co-investigator
Medical Masks versus N95 Respirators to Prevent COVID-19 in Healthcare Workers: A Randomized Trial
CIHR · 2020 · Co-investigator
$624,953
A clinical trial comparing C. difficile point of care testing versus laboratory testing in a large Canadian centre
CIHR · 2016 · Principal investigator
$10,000

All 3 grants and awards

11 publications.

Longitudinal wastewater-based surveillance of vancomycin-resistant Enterococci in tertiary-care hospitals.

Au E, Acosta N, Waddell BJ, Lee J, Du K, Weyant RB, Bautista M, McCalder J, Van Doorn J, Low K, Stefani S, Visser G, Clark R, Pitout J, Kim J, Missaghi B, Larios O, Kanji J, Vayalumkal J, Leal J, Westlund P, Quinn RR, James MT, Lee B, Pang XL, Dalton B, Frankowski K, O'Grady C, Conly JM, Hubert CRJ, Parkins MD

The Science of the total environment2026

DOI: 10.1016/j.scitotenv.2026.181851 PMID: 42217846

Analysis of invasive group A streptococcal puerperal sepsis in Calgary, Alberta: clinical consequences and policy implications

Qaddoura A, McQuiston M, Tyrrell G, Croxen M, Li V, Demarco R, Pinfield S, Ramazanova R, Hope K, Cairns E-R

Infection Control and Hospital Epidemiology2024

DOI: 10.1017/ice.2024.154

Misattribution Bias of COVID-19 Hospitalizations in Alberta Using an Admission Algorithm.

Dinh T, Ross J, James S, Klein K, Chandran AU, Larios O, Strong D, Conly JM, COVID-19 Hospitalization Working Group

Journal of the Association of Medical Microbiology and Infectious Disease Canada = Journal officiel de l'Association pour la microbiologie medicale et l'infectiologie Canada2024

DOI: 10.3138/jammi-2024-0011 PMID: 40672707

Effectiveness of Bio-K+ for the prevention of Clostridioides difficile infection: Stepped-wedge cluster-randomized controlled trial.

Leal J, Shen Y, Faris P, Dalton B, Sabuda D, Ocampo W, Bresee L, Chow B, Fletcher JR, Henderson E, Kaufman J, Kim J, Raman M, Kraft S, Lamont NC, Larios O, Missaghi B, Holroyd-Leduc J, Louie T, Conly J

Infection control and hospital epidemiology2024

DOI: 10.1017/ice.2023.169 PMID: 38073551

Surveillance for SARS-CoV-2 and its variants in wastewater of tertiary care hospitals correlates with increasing case burden and outbreaks.

Acosta N, Bautista MA, Waddell BJ, Du K, McCalder J, Pradhan P, Sedaghat N, Papparis C, Beaudet AB, Chen J, Van Doorn J, Xiang K, Chan L, Vivas L, Low K, Lu X, Lee J, Westlund P, Chekouo T, Dai X, Cabaj J, Bhatnagar S, Ruecker N, Achari G, Clark RG, Pearce C, Harrison JJ, Meddings J, Leal J, Ellison J, Missaghi B, Kanji JN, Larios O, Rennert-May E, Kim J, Hrudey SE, Lee BE, Pang X, Frankowski K, Conly J, Hubert CRJ, Parkins MD

Journal of medical virology2023

DOI: 10.1002/jmv.28442 PMID: 36579780

Complex cardiac implantable electronic device infections in Alberta, Canada: An epidemiologic cohort study of validated administrative data.

King TL, Chew DS, Leal J, Cannon K, Exner DV, Smith S, Larios O, Bush K, Yuen B, Zhang Z, Rennert-May E

Infection control and hospital epidemiology2023

DOI: 10.1017/ice.2023.48 PMID: 37183997

Medical Masks Versus N95 Respirators for Preventing COVID-19 Among Health Care Workers

Loeb M, Bartholomew A, Hashmi M, Tarhuni W, Hassany M, Youngster I, Somayaji R, Larios O, Kim J, Missaghi B

ACP journal club202282 citations

DOI: 10.7326/m22-1966

Risk of transmission of respiratory viruses during aerosol-generating medical procedures (AGMPs) revisited in the COVID-19 pandemic: a systematic review.

Leal J, Farkas B, Mastikhina L, Flanagan J, Skidmore B, Salmon C, Dixit D, Smith S, Tsekrekos S, Lee B, Vayalumkal J, Dunn J, Harrison R, Cordoviz M, Dubois R, Chandran U, Clement F, Bush K, Conly J, Larios O

Antimicrobial resistance and infection control2022Senior author

DOI: 10.1186/s13756-022-01133-8 PMID: 35953854

Pulmonary Cryptococcus infections as a manifestation of idiopathic CD4 lymphocytopenia: case report and literature review.

Thornton CS, Larios O, Grossman J, Griener TP, Vaughan S

BMC infectious diseases2019

DOI: 10.1186/s12879-019-4453-x PMID: 31623573

Evaluation of Simplexa Group A Strep Direct Kit Compared to Hologic Group A Streptococcal Direct Assay for Detection of Group A Streptococcus in Throat Swabs.

Church DL, Lloyd T, Larios O, Gregson DB

Journal of clinical microbiology2018

DOI: 10.1128/jcm.01666-17 PMID: 29305544

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Oscar Larios

Research

Latest papers

Latest funding

Longitudinal wastewater-based surveillance of vancomycin-resistant Enterococci in tertiary-care hospitals.

Analysis of invasive group A streptococcal puerperal sepsis in Calgary, Alberta: clinical consequences and policy implications

Misattribution Bias of COVID-19 Hospitalizations in Alberta Using an Admission Algorithm.

Effectiveness of Bio-K+ for the prevention of Clostridioides difficile infection: Stepped-wedge cluster-randomized controlled trial.

Surveillance for SARS-CoV-2 and its variants in wastewater of tertiary care hospitals correlates with increasing case burden and outbreaks.

Complex cardiac implantable electronic device infections in Alberta, Canada: An epidemiologic cohort study of validated administrative data.

Medical Masks Versus N95 Respirators for Preventing COVID-19 Among Health Care Workers

Risk of transmission of respiratory viruses during aerosol-generating medical procedures (AGMPs) revisited in the COVID-19 pandemic: a systematic review.

Pulmonary Cryptococcus infections as a manifestation of idiopathic CD4 lymphocytopenia: case report and literature review.

Evaluation of Simplexa Group A Strep Direct Kit Compared to Hologic Group A Streptococcal Direct Assay for Detection of Group A Streptococcus in Throat Swabs.

Policy Implementation and Communication Lessons from Alberta's Acute and Primary Care Environments During the COVID-19 Response

Medical Masks versus N95 Respirators to Prevent COVID-19 in Healthcare Workers: A Randomized Trial

A clinical trial comparing C. difficile point of care testing versus laboratory testing in a large Canadian centre

Frequent collaborators

Jenine Leal

John Conly

Elissa Rennert-May

Kathryn Bush

Ranjani Somayaji

Jason Cabaj

Gregory Tyrrell

Karen Hope

Bonita Lee

Johann Pitout

Eleanor Pullenayegum

Matthew Croxen

Xiaoli Pang

Jia Hu

Mark Loeb

Dominik Mertz

Zain Chagla

Karim Ali

Amro Qaddoura

Fiona Clement

Jayna Holroyd-Leduc

Jayna Holroyd-Leduc