Faculty profile

Louis Valiquette

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ProfessorDépartement de microbiologie et d'infectiologieUniversité de Sherbrooke

Louis Valiquette

Professor

Département de microbiologie et d'infectiologie

Université de Sherbrooke

Sherbrooke, Quebec, Canada

Supervision signals

Professors usually supervise graduate students in their department's programs.
23 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 NSERC), most recently in 2010.

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

Academic metrics

Publications

2,762

Citations

101

Collaborators

Grants

Publications by year

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

Profiles and links

University Profile

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Signals and details

Research

Read how they describe their research on their Université de Sherbrooke profile.

Latest papers

Initial Vancomycin Taper for the Prevention of Recurrent Clostridioides difficile Infection
JAMA Network Open · 2026
Post-licensure safety of nirsevimab from the Canadian National Vaccine Safety (CANVAS) network.
Human vaccines & immunotherapeutics · 2026
mRNA COVID-19 vaccine safety in adults from the Canadian national vaccine safety network.
Vaccine · 2026

All 78 publications

Latest funding

Canadian Immunization Research Network (CIRN) Renewal
CIHR · 2024 · Co-investigator
COVID-19 in working age Canadian adults: Long-term follow up of infections and immune responses
CIHR · 2022 · Co-investigator
$867,001
COVID-19 Variant Network - Are healthcare workers at higher risk of COVID-19 than other working adults?
CIHR · 2021 · Co-investigator
$100,000

All 15 grants and awards

78 publications.

Initial Vancomycin Taper for the Prevention of Recurrent Clostridioides difficile Infection

McDonald EG, Butler-Laporte G, Brophy JM, Elsayed S, Frenette C, Huseen I, Loo VG, Moran K, Coburn B, Hota SS

JAMA Network Open20268 citationsOpen Access

DOI: 10.1001/jamanetworkopen.2025.60495

Post-licensure safety of nirsevimab from the Canadian National Vaccine Safety (CANVAS) network.

Viñeta Paramo M, Kiely M, Valiquette L, Muller MP, McGeer A, Isenor JE, Sadarangani M, Kellner JD, Vanderkooi OG, Marty K, Lavoie PM, Bettinger JA

Human vaccines & immunotherapeutics20262 citationsOpen Access

DOI: 10.1080/21645515.2026.2658377 PMID: 42048598

mRNA COVID-19 vaccine safety in adults from the Canadian national vaccine safety network.

Muller MP, Soe P, Shulha HP, Isenor JE, Valiquette L, Sadarangani M, Vanderkooi OG, Kellner JD, Top KA, De Serres G, McGeer A, Kiely M, Marty K, Irvine M, Bettinger JA, Canadian Immunization Research Network

Vaccine20261 citationsOpen Access

DOI: 10.1016/j.vaccine.2026.128630 PMID: 42092317

Safety of COVID-19 and influenza vaccines in children and adolescents with immunocompromised or autoimmune conditions: Findings from the Canadian National Vaccine Safety (CANVAS) network.

Turner C, Vanderkooi OG, Kellner JD, Shulha HP, Muller MP, Sadarangani M, Isenor JE, Marty K, Soe P, Kiely M, Valiquette L, McGeer A, Bettinger JA

Human vaccines & immunotherapeutics20261 citationsOpen Access

DOI: 10.1080/21645515.2026.2664323 PMID: 42053343

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 citationsOpen Access

DOI: 10.1093/ofid/ofaf058

Risk factors for infection with SARS-CoV-2 in a cohort of Canadian healthcare workers: 2020–2023

Coleman BL, Robertson NM, Harrison RA, Valiquette L, Langley JM, Muller MP, Cooper CL, Nadarajah J, Powis J, Arnoldo S

Epidemiology and Infection20253 citationsOpen Access

DOI: 10.1017/s0950268825100101

Safety of co-administration of COVID-19 and seasonal influenza vaccines in individuals with autoimmune diseases from the Canadian National Vaccine Safety Network.

Soe P, Muller MP, Sadarangani M, Kellner JD, Vanderkooi OG, Naus M, Wong H, Isenor JE, Marty K, De Serres G, Valiquette L, McGeer A, Bettinger JA, Canadian Immunization Research Network

Human vaccines & immunotherapeutics20253 citationsOpen Access

DOI: 10.1080/21645515.2025.2560172 PMID: 40963477

P robiotics i nfluencing r esponse of a ntibodies over t ime in s eniors after CO VID-19 v accine (PIRATES-COV): a randomised controlled trial protocol.

Pasquier JC, Plourde M, Ramanathan S, Chaillet N, Boivin G, Laforest-Lapointe I, Allard-Chamard H, Baron G, Beaulieu JF, Fülöp T, Généreux M, Mâsse B, Robitaille J, Valiquette L, Bilodeau S, H Buch D, Piche A

BMJ open20251 citationsOpen Access

DOI: 10.1136/bmjopen-2024-088231 PMID: 40107677

Canadian health care providers' and education workers' hesitance to receive original and bivalent COVID-19 vaccines

Coleman BL, Gutmanis I, Bondy SJ, Harrison R, Langley J, Fischer K, Cooper C, Valiquette L, Muller MP, Powis J

Vaccine20248 citationsOpen Access

DOI: 10.1016/j.vaccine.2024.126271

mRNA COVID-19 vaccine safety among children and adolescents: a Canadian National Vaccine Safety Network cohort study.

Soe P, Vanderkooi OG, Sadarangani M, Naus M, Muller MP, Kellner JD, Top KA, Wong H, Isenor JE, Marty K, Shulha HP, De Serres G, Valiquette L, McGeer A, Bettinger JA

Lancet regional health. Americas20246 citationsOpen Access

DOI: 10.1016/j.lana.2024.100949 PMID: 39659558

Canadian Immunization Research Network (CIRN) Renewal

Co-investigatorCIHR2024Canadian Immunization Research Network - Full application

Principal investigators: Halperin, Scott A; Andrew, Melissa K; Bettinger, Julie A; Bolotin, Shelly; Brisson, Marc; Buchan, Sarah; Cowan, Juthaporn; Dubé, Eve; Greyson, Devon; Hatchette, Todd F; Heffernan, Jane M; Kwong, Jeffrey C; Langley, Joanne M; MacDonald, Shannon E; McNeil, Shelly A; Muller, Matthew P; Parsons Leigh, Jeanna J; Sadarangani, Manish; Top, Karina A

Keywords: Adverse Events Following Immunization; Immunogenicity; Population-Based Methodology; Rapid Response Research Capacity; Vaccine Coverage; Vaccine Effectiveness; Vaccine Hesitancy; Vaccine Modeling And Economic Analysis; Vaccine Safety; Vulnerable Populations

COVID-19 in working age Canadian adults: Long-term follow up of infections and immune responses

Co-investigatorCIHR2022Operating Grant: COVID-19 - Project Grant

Principal investigators: Coleman, Brenda L

Keywords: Adult; Cohort; Correlates Of Protection; Covid-19; Education; Epidemiology; Health Care

$867,001

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

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

Canadian Immunization Research Network: COVID-19 Vaccine Readiness

Co-investigatorCIHR2020Canadian Immunization Research Network: COVID-19 Vaccine Readiness Funding Opp

Principal investigators: Halperin, Scott A; Andrew, Melissa K; Bettinger, Julie A; Bolotin, Shelly; Brisson, Marc; De Serres, Gaston; De Wals, Philippe; Deeks, Shelley L; Dubé, Eve; Hatchette, Todd F; Kellner, James D; Kwong, Jeffrey C; Langley, Joanne M; Loeb, Mark B; MacDonald, Shannon E; McNeil, Shelly A; Top, Karina A; Ward, Brian J

Keywords: Adverse Events Following Immunization; Clinical Trials Capacity And Readiness; Immunogenicity; Knowledge Translation; Population-Based Methodology; Rapid Response Research Capacity; Vaccine Coverage; Vaccine Hesitancy; Vaccine Modeling; Vaccine Safety And Effectiveness

The S. aureus Network Adaptive Platform Trial (SNAP) Canada: A Randomized Controlled Trial for Penicillin-susceptible, Methicillin-susceptible, and Methicillin-resistant Staphylococcus aureus Bloodstream Infections in Hospitalized Patients

Co-investigatorCIHR2020Project Grant

Principal investigators: Cheng, Matthew P; Daneman, Nick; Johnstone, Jennie; Lee, Todd C

Keywords: Bacteremia; Randomized Controlled Trial; Staphylococcus Aureus

$1,139,852

National platform for robotized multi-viral RNA detection and strain identification

Co-investigatorCFI2020Exceptional Opportunities Fund: Exceptional Opportunities Fund - COVID-19

Principal investigators: Elela, Sherif Abou

Keywords: RT-qPCR, RNA detection, Viral RNA detection, Strain identification. digital PCR, automated RNA extraction and virus detection, host-virus interaction Robotized multi-viral RNA detection and identification

$330,932

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

Canadian Immunization Research Network

Co-investigatorCIHR2017Canadian Immunization Research Network - Full application

Principal investigators: Halperin, Scott A; Andrew, Melissa K; Bettinger, Julie A; Bolotin, Shelly; Brisson, Marc; Burchell, Ann N; Coleman, Brenda L; Crowcroft, Natasha S; De Serres, Gaston; De Wals, Philippe; Deeks, Shelley L; Doroshenko, Alexander; Dubé, Eve; Gagneur, Arnaud A; Kwong, Jeffrey C; Langley, Joanne M; Loeb, Mark B; McNeil, Shelly A; Sadarangani, Manish; Top, Karina A; Ulanova, Marina; Ward, Brian J

$932,667

Accuracy and generalizability of using automated methods for identifying adverse events from electronic health record data

Co-investigatorCIHR2016Project Grant

Principal investigators: Rochefort, Christian

Keywords: Acute Care Hospitals; Adverse Events; Automated Detection; Central Line-Associated Bloodstream Infection; Electronic Health Record; Health Informatics; Hospital-Acquired Pneumonia; Validation Study; Ventilator-Associated Events

$305,801

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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Louis Valiquette

Research

Latest papers

Latest funding

Initial Vancomycin Taper for the Prevention of Recurrent Clostridioides difficile Infection

Post-licensure safety of nirsevimab from the Canadian National Vaccine Safety (CANVAS) network.

mRNA COVID-19 vaccine safety in adults from the Canadian national vaccine safety network.

Safety of COVID-19 and influenza vaccines in children and adolescents with immunocompromised or autoimmune conditions: Findings from the Canadian National Vaccine Safety (CANVAS) network.

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

Risk factors for infection with SARS-CoV-2 in a cohort of Canadian healthcare workers: 2020–2023

Safety of co-administration of COVID-19 and seasonal influenza vaccines in individuals with autoimmune diseases from the Canadian National Vaccine Safety Network.

P robiotics i nfluencing r esponse of a ntibodies over t ime in s eniors after CO VID-19 v accine (PIRATES-COV): a randomised controlled trial protocol.

Canadian health care providers' and education workers' hesitance to receive original and bivalent COVID-19 vaccines

mRNA COVID-19 vaccine safety among children and adolescents: a Canadian National Vaccine Safety Network cohort study.

National platform for robotized multi-viral RNA detection and strain identification

Frequent collaborators

Allison McGeer

Mark Loeb

Shelly McNeil

Guy Boivin

Otto Vanderkooi

Melissa Andrew

Melissa Andrew

Melissa Andrew

James Kellner

Julie Bettinger

Makeda Semret

Jennifer Isenor

Manish Sadarangani

Gaston De Serres

Alex Carignan

Karina Top

Joanne Langley

Janet McElhaney

Louis-Charles Fortier

Scott Halperin

Amanda Lang

Émilie Bédard

André Poirier

Karl Weiss

Nils Chaillet