Faculty profile

Erjia Ge

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Associate ProfessorEpidemiologyUniversity of Toronto

Erjia Ge

Associate Professor

Epidemiology

Dalla Lana School of Public Health

University of Toronto

Toronto, Ontario, Canada

Scholar ORCID

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 2 research grants (2 CIHR), most recently in 2022.

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

h-index

Collaborators

Grants

Publications by year

Counts cover the works listed on the university profile; citation counts come from Dimensions.

Education

PhD, Health Geography

Profiles and links

University Profile Google Scholar iDORCID

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Signals and details

Research

Read how they describe their research on their University of Toronto profile.

Public and population health Epidemiology (except nutritional and veterinary epidemiology)Spatial statistics

Latest papers

Association between air temperature and COVID-19 emergency department visits in Ontario, Canada: A population-based case-crossover study.
International journal of hygiene and environmental health · 2026
Effect of a comprehensive package based on combined C-reactive protein and serum amyloid A point-of-care testing on antibiotic prescribing for acute respiratory tract infections at village clinics in China: a cluster randomised controlled trial.
The Lancet regional health. Western Pacific · 2026
Weather, air pollution, and migraine: A case-time series analysis examining environmental exposures and transient health outcomes recorded via smartphone application.
Environmental epidemiology (Philadelphia, Pa.) · 2026

All 37 publications

Latest funding

Promoting planetary health education, smoking-free home, and clean air community mobilization to prevent air pollution related non-communicable diseases in urban Pakistan
CIHR · 2024 · Co-investigator
$100,000
Activation, recurrence, and mortality: Exploring impacts of air pollution and greenness on progressions of latent and active tuberculosis to inform interventions.
CIHR · 2022 · Nominated PI
$290,699
Implementing a telemedicine and remote-mentoring platform to provide integrated noncommunicable disease and COVID-19 care in primary care facilities in rural Pakistan
CIHR · 2021 · Co-investigator
$499,886

All 5 grants and awards

37 publications.

Association between air temperature and COVID-19 emergency department visits in Ontario, Canada: A population-based case-crossover study.

Grubic N, Ge E, Zang Z, Lavigne E, Campitelli MA, Golding H, Cisse T, Koh M, Batomen B, Liu J, Wei X

International journal of hygiene and environmental health2026

DOI: 10.1016/j.ijheh.2026.114856 PMID: 42413142

Effect of a comprehensive package based on combined C-reactive protein and serum amyloid A point-of-care testing on antibiotic prescribing for acute respiratory tract infections at village clinics in China: a cluster randomised controlled trial.

Xu M, Wang J, Zhang Z, Ge E, Zhu Y, Li J, Gong Y, Lu Z, Wei X, Yin X

The Lancet regional health. Western Pacific2026

DOI: 10.1016/j.lanwpc.2026.101888 PMID: 42239972

Weather, air pollution, and migraine: A case-time series analysis examining environmental exposures and transient health outcomes recorded via smartphone application.

Portt AE, Gasparrini A, Ge E, Lay C, Chen H, Smith PM

Environmental epidemiology (Philadelphia, Pa.)2026

DOI: 10.1097/ee9.0000000000000475 PMID: 42109518

Early-life greenness and childhood asthma and allergic rhinitis: an Ontario birth cohort study.

Ge E, Yu C, Lavigne E, Villeneuve PJ, Liu X, Grubic N, Lou W, Brook J, Lu Z, Li YL, To T

The European respiratory journal2026First author

DOI: 10.1183/13993003.02272-2025 PMID: 41819538

Association between air pollution and chronic cough: Evidence from a systematic review and meta-analysis of observational studies.

Kim H, Lai K, Cisse T, Wei X, Ge E

Environmental research2026Senior author

DOI: 10.1016/j.envres.2026.124108 PMID: 41763474

Early-Life Ozone Exposure and Childhood Allergic Rhinitis: Critical Exposure Windows, Exposure-Response Relationships, and Protective Modifiers.

Chen T, Niu Z, Norback D, Prapamontol T, Svartengren M, Ge E, Zhang X, Lu C, Zhang L, Yu W, Zheng X, Wang T, Meng X, Wei J, Fatmi Z, Liu Z, Xu Y, Zhao Z

Environment & health (Washington, D.C.)2026

DOI: 10.1021/envhealth.5c00319 PMID: 42022202

Effect of C-reactive protein and serum amyloid A point-of-care testing on antibiotic prescribing for acute respiratory-tract infections at village clinics in China: A study protocol for a cluster randomised controlled trial.

Xu M, Zhang Z, Ge E, Xie CX, Bai X, Zhu Y, Kuang G, Li J, Wang J, Wei X, Yin X

PloS one2025

DOI: 10.1371/journal.pone.0331646 PMID: 40920832

Measuring Migraine in Canada and the USA: An Online Survey of Emergency Room and Smartphone Application Use.

Portt AE, Lay C, Chen H, Ge E, Smith PM

The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques2025

DOI: 10.1017/cjn.2025.10140 PMID: 40557828

Rapid flips between warm and cold extremes in a warming world.

Wu S, Luo M, Lau GN, Zhang W, Wang L, Liu Z, Lin L, Wang Y, Ge E, Li J, Fan Y, Chen Y, Liao W, Wang X, Xu X, Qi Z, Huang Z, Chan FKS, Chen DY, Liu X, Pei T

Nature communications2025

DOI: 10.1038/s41467-025-58544-5 PMID: 40263258

Impact of heat on emergency hospital admission in Texas: geographic and racial/ethnic disparities.

Guo C, Ge E, Lee S, Lu Y, Bassill NP, Zhang N, Zhang W, Lu Y, Hu Y, Chakraborty J, Emeny RT, Zhang K

Journal of exposure science & environmental epidemiology2024

DOI: 10.1038/s41370-023-00590-6 PMID: 37558698

Write to this professor

A short, specific email works best. This draft uses one of their recent papers; replace the parts in brackets with your own details before sending.

Applying for

Paper to mentionMention their CIHR grant from 2022

Subject: Prospective PhD student: Public and population health Dear Professor Ge, My name is [your name], and I am a [your current degree or role] at [your institution]. I am applying for a PhD position starting in [term and year]. I read your paper "Association between air temperature and COVID-19 emergency department visits in Ontario, Canada: A population-based case-crossover study." (2026), and it connects closely to my own work on [your research topic]. [One or two sentences on what you did and what you learned.] I also saw your CIHR-funded project "Activation, recurrence, and mortality: Exploring impacts of air pollution and greenness on progressions of latent and active tuberculosis to inform interventions." (2022), and I would be glad to contribute to work in that direction. Are you accepting new PhD students for [term and year]? I have attached my CV and transcripts, and I would be glad to talk at a time that suits you. Thank you for your time. Kind regards, [your name]

Profile data last refreshed on September 25, 2026 from the university directory, publication records and CIHR, NSERC and SSHRC funding.

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Erjia Ge

Research

Latest papers

Latest funding

Association between air temperature and COVID-19 emergency department visits in Ontario, Canada: A population-based case-crossover study.

Effect of a comprehensive package based on combined C-reactive protein and serum amyloid A point-of-care testing on antibiotic prescribing for acute respiratory tract infections at village clinics in China: a cluster randomised controlled trial.

Weather, air pollution, and migraine: A case-time series analysis examining environmental exposures and transient health outcomes recorded via smartphone application.

Early-life greenness and childhood asthma and allergic rhinitis: an Ontario birth cohort study.

Association between air pollution and chronic cough: Evidence from a systematic review and meta-analysis of observational studies.

Early-Life Ozone Exposure and Childhood Allergic Rhinitis: Critical Exposure Windows, Exposure-Response Relationships, and Protective Modifiers.

Effect of C-reactive protein and serum amyloid A point-of-care testing on antibiotic prescribing for acute respiratory-tract infections at village clinics in China: A study protocol for a cluster randomised controlled trial.

Measuring Migraine in Canada and the USA: An Online Survey of Emergency Room and Smartphone Application Use.

Rapid flips between warm and cold extremes in a warming world.

Impact of heat on emergency hospital admission in Texas: geographic and racial/ethnic disparities.

Promoting planetary health education, smoking-free home, and clean air community mobilization to prevent air pollution related non-communicable diseases in urban Pakistan

Activation, recurrence, and mortality: Exploring impacts of air pollution and greenness on progressions of latent and active tuberculosis to inform interventions.

Implementing a telemedicine and remote-mentoring platform to provide integrated noncommunicable disease and COVID-19 care in primary care facilities in rural Pakistan

Allometric scaling of health status with population settlement size

Exploring inequalities of greenness accessibility to inform interventions to reduce avoidable development of allergic-related respiratory problems in children

Frequent collaborators

Xiaolin Wei

Hong Chen

Éric Lavigne

Brice Batomen

Wendy Lou

Christa Orchard

Garry Aslanyan

Zihang Lu

Ross Upshur

Teresa To

Kevin Thorpe

Howard Hu

Audrey Laporte

Jeffrey Brook

Warren Dodd