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K. L. Schwartz · SciRah

Researcher profile · Semantic Scholar

K. L. Schwartz

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K. L. Schwartz — researcher profile on SciRah

h-index: 13
Works: 37
Citations: 1,001

Most-cited papers

Effectiveness of BNT162b2 and mRNA-1273 covid-19 vaccines against symptomatic SARS-CoV-2 infection and severe covid-19 outcomes in Ontario, Canada: test negative design study
H. Chung, Siyi He, S. Nasreen, M. Sundaram +18 more
2021British medical journal281 citations Open access
Semantic Scholar
Association Between Nursing Home Crowding and COVID-19 Infection and Mortality in Ontario, Canada
K. Brown, A. Jones, N. Daneman, Adrienne K. Chan +4 more
2020medRxiv223 citations Open access
Semantic Scholar
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
Semantic Scholar
Antimicrobial resistance and mortality following E. coli bacteremia
N. Daneman, Daniel J. Fridman, J. Johnstone, B. Langford +6 more
2022EClinicalMedicine54 citations Open access
Semantic Scholar
Effectiveness of mRNA COVID-19 vaccine booster doses against Omicron severe outcomes
R. Grewal, L. Nguyen, S. Buchan, S. E. Wilson +9 more
2023Nature Communications53 citations Open access
Semantic Scholar
Newborn and Early Infant Outcomes Following Maternal COVID-19 Vaccination During Pregnancy
Sarah C. J. Jorgensen, S. Drover, D. Fell, P. C. Austin +9 more
2023JAMA pediatrics50 citations Open access
Semantic Scholar
Maternal mRNA covid-19 vaccination during pregnancy and delta or omicron infection or hospital admission in infants: test negative design study
Sarah C. J. Jorgensen, Alejandro Hernandez, D. Fell, P. Austin +10 more
2023British medical journal47 citations Open access
Semantic Scholar
Highly versus less bioavailable oral antibiotics in the treatment of gram negative bloodstream infections: a propensity-matched cohort analysis.
Kwadwo Mponponsuo, K. Brown, Daniel J. Fridman, J. Johnstone +6 more
2022Clinical Microbiology and Infection28 citations Open access
Semantic Scholar
Nursing home crowding and its association with outbreak-associated respiratory infection in Ontario, Canada before the COVID-19 pandemic (2014–19): a retrospective cohort study
P. Leece, M. Whelan, A. Costa, N. Daneman +5 more
2023The Lancet Healthy Longevity24 citations Open access
Semantic Scholar
COVID-19 Vaccine Effectiveness Against Omicron Infection and Hospitalization.
P. Piché-Renaud, S. Swayze, S. Buchan, Sarah E. Wilson +8 more
2023Pediatrics16 citations Open access
Semantic Scholar
Effectiveness of COVID-19 Vaccines Over Time Prior to Omicron Emergence in Ontario, Canada: Test-Negative Design Study
H. Chung, P. Austin, K. Brown, S. Buchan +10 more
2022Open Forum Infectious Diseases15 citations Open access
Semantic Scholar
Follow-up blood cultures do not reduce mortality in hospitalized patients with Gram-negative bloodstream infection: a retrospective population-wide cohort study.
Sean W. X. Ong, Jin Luo, Daniel J. Fridman, Samantha M. Lee +9 more
2024Clinical Microbiology and Infection14 citations Open access
Semantic Scholar
Effectiveness of mRNA COVID-19 Monovalent and Bivalent Vaccine Booster Doses Against Omicron Severe Outcomes Among Adults Aged ≥50 Years in Ontario, Canada: A Canadian Immunization Research Network Study
R. Grewal, S. Buchan, L. Nguyen, S. Nasreen +9 more
2023Journal of Infectious Diseases13 citations Open access
Semantic Scholar
Protection Conferred by COVID-19 Vaccination, Prior SARS-CoV-2 Infection, or Hybrid Immunity Against Omicron-Associated Severe Outcomes Among Community-Dwelling Adults
N. Lee, L. Nguyen, P. C. Austin, K. Brown +9 more
2023medRxiv12 citations Open access
Semantic Scholar
Antibiotic susceptibility of urine culture specimens in Ontario: a population-based cohort study
A. Marchand-Austin, Samantha M. Lee, B. Langford, N. Daneman +8 more
2022CMAJ Open12 citations Open access
Semantic Scholar
Comparative Household Secondary Attack Rates associated with B.1.1.7, B.1.351, and P.1 SARS-CoV-2 Variants
K. Brown, Semra Tibebu, N. Daneman, K. L. Schwartz +2 more
2021medRxiv12 citations Open access
Semantic Scholar
A real-world assessment of procalcitonin combined with antimicrobial stewardship in a community ICU.
B. Langford, Daniel Beriault, K. L. Schwartz, J. Seah +4 more
2020Journal of critical care10 citations
Semantic Scholar
Evaluating the Impact of Statin Use on Influenza Vaccine Effectiveness and Influenza Infection in Older Adults
H. Chung, M. Campitelli, S. Buchan, Aaron Campigotto +16 more
2023Clinical Infectious Diseases9 citations Open access
Semantic Scholar
Antibiotic Selection and Duration for Catheter-Associated Urinary Tract Infection in Non-Hospitalized Older Adults: A Population-Based Cohort Study
B. Langford, N. Daneman, C. Diong, Samantha M. Lee +7 more
2023Antimicrobial Stewardship and Healthcare Epidemiology9 citations Open access
Semantic Scholar
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
Semantic Scholar
Vaccine Effectiveness of BNT162b2 Against Omicron in Children Aged 5-11 Years: A Test-Negative Design
P. Piché-Renaud, S. Swayze, S. Buchan, Sarah E. Wilson +9 more
2022Social Science Research Network8 citations
Semantic Scholar
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
Semantic Scholar
Antibiotic prescribing guideline recommendations in COVID-19: a systematic survey
B. Langford, V. Leung, Jennifer Lo, E. Akl +6 more
2023EClinicalMedicine5 citations Open access
Semantic Scholar
The impact of expanded access to direct acting antivirals for Hepatitis C virus on patient outcomes in Canada
C. Chu, T. Gomes, T. Antoniou, William W. L. Wong +6 more
2023PLoS ONE5 citations Open access
Semantic Scholar
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
Semantic Scholar
Effectiveness of Maternal mRNA COVID-19 Vaccination During Pregnancy Against Delta and Omicron SARS-CoV-2 Infection and Hospitalization in Infants: A Test-Negative Design Study
Sarah C. J. Jorgensen, Alejandro Hernandez, D. Fell, P. Austin +11 more
2022Social Science Research Network3 citations
Semantic Scholar
SARS-CoV-2 testing, infection and outcomes among Ontario physicians: a descriptive population-based cohort study
Cheng-Wei Liu, N. Jeyakumar, E. McArthur, J. Sontrop +5 more
2022CMAJ Open2 citations Open access
Semantic Scholar
SARS-CoV-2 rapid antigen screening of asymptomatic employees: a pilot project
K. L. Schwartz, I. Bogoch, D. MacInTosh, J. Barrow +7 more
2022Canadian journal of public health2 citations Open access
Semantic Scholar
Pediatric household transmission of SARS-CoV-2 infection
Lauren A. Paul, N. Daneman, K. L. Schwartz, Michelle Science +4 more
2021medRxiv2 citations Open access
Semantic Scholar
Association between use of a voluntary isolation centre and reduced household SARS-CoV-2 transmission: A matched cohort study from Toronto, Canada.
Kevin A. Brown, A. Ulloa, S. Buchan, N. Daneman +4 more
2024Clinical Infectious Diseases1 citations
Semantic Scholar
Corrigendum to Highly versus less bioavailable oral antibiotics in the treatment of gram-negative bloodstream infections: a propensity-matched cohort analysis.
Kwadwo Mponponsuo, K. Brown, Daniel J. Fridman, J. Johnstone +6 more
2023Clinical Microbiology and Infection1 citations Open access
Semantic Scholar
Author Correction: Effectiveness of mRNA COVID-19 vaccine booster doses against Omicron severe outcomes
R. Grewal, Leann Nguyen, S. Buchan, Sarah E. Wilson +9 more
2023Nature Communications1 citations Open access
Semantic Scholar
School-Based Mandatory Masking Policies and Absenteeism in Ottawa, Canada, in 2022
N. Thampi, K. L. Schwartz, Michelle Science, Kevin A. Brown
2023JAMA Network Open1 citations Open access
Semantic Scholar
SARS-CoV-2 rapid diagnostic testing: Canadian consensus guidance for pharmacists
A. Sihota, Brett Barrett, Cameron Bonell, Ahmad Chehade +10 more
2023Canadian Pharmacists Journal / Revue des Pharmaciens du Canada0 citations Open access
Semantic Scholar
Association between nursing home crowding and outbreak-associated respiratory infection and death prior to the COVID-19 pandemic between 2014 and 2019 in Ontario, Canada
P. Leece, M. Whelan, A. Costa, N. Daneman +5 more
2022medRxiv0 citations Open access
Semantic Scholar
Long-Term Macrolide Therapy for Chronic Obstructive Pulmonary Disease: A Longitudinal Population-Based Study
M. Yan, Farah E. Saxena, A. Calzavara, K. Brown +7 more
20200 citations
Semantic Scholar
Influenza Vaccine Effectiveness in Older Patients with Chronic Obstructive Pulmonary Disease (COPD)
A. Gershon, H. Chung, J. Porter, M. Campitelli +13 more
2019A94. INNOVATIONS TO IMPROVE CARE IN OBSTRUCTIVE LUNG DISEASE0 citations
Semantic Scholar

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