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Obidimma Ezezika

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Assistant ProfessorSchool of Health StudiesWestern University

Obidimma Ezezika

Assistant Professor

School of Health Studies

Faculty of Health Sciences

Western University

London, Ontario, Canada

Supervision signals

Professors usually supervise graduate students in their department's programs.
16 publications in the last five years, latest in 2026.
Senior (last) author on 4 recent papers, a sign of leading a research group.
Principal investigator on 4 research grants (2 CIHR, 2 SSHRC), most recently in 2025.
Supervised 1 trainee who won CIHR awards, most recently in 2025.

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.

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Signals and details

Research

Read how they describe their research on their Western University profile.

Pandemic

Latest papers

Pairwise and three-country comparisons of high and low COVID-19 vaccination rates in 12 African countries: a mixed-method study protocol.
BMJ open · 2026 · first author
Global learning opportunities within social innovation in health (GLOWS): A modified Delphi process to identify and pilot core competencies for learning.
PloS one · 2026
Barriers and facilitators to knowledge and awareness around sexually transmitted and blood-borne infections (STBBIs)–related preventive measures among Black populations across Canada: a systematic review
Canadian Journal of Public Health · 2026 · senior author

All 16 publications

Latest funding

Improving Integrated Knowledge Translation for Evidence-Informed Health Care by Attending to Power
CIHR · 2025 · Co-investigator
$355,726
Health Equity and Implementation Science in Canada
CIHR · 2025 · Supervisor
$6,000
Strengthening Pandemic Vaccine Preparedness in Africa (SPAVPA) 2.0: Lessons from African countries with high and low COVID-19 vaccination rates
CIHR · 2025 · Nominated PI
$313,651

All 7 grants and awards

16 publications.

Pairwise and three-country comparisons of high and low COVID-19 vaccination rates in 12 African countries: a mixed-method study protocol.

Ezezika O, Sonko B, Olorunbiyi O, Amponsah-Dacosta E, Ameyaw EK, Omwenga EO, Kandala NB, Djuidje-Ngounoue M, Raimi M, Surakat O, Ariyo O, Malande OO, Mong'are S, Demi SM, Ndodo N, Quibrantar S, Kishif F, Abdullahi M, Edor J, Elemuwa C, Obiageli N, Ogunwale AO, Nakatugga RA, Zelalem M, Luginaah IN

BMJ open2026First author

DOI: 10.1136/bmjopen-2025-114816 PMID: 42379710

Global learning opportunities within social innovation in health (GLOWS): A modified Delphi process to identify and pilot core competencies for learning.

Wallace E, Tao Y, Aribodor OB, Zhu Z, Borbón A, Halpaap B, Chakhame BM, Jacob EC, Ahmed F, Francis JM, Septiawan KG, Mawuli K, Mutisya L, Ekasari MP, Azugo NO, Fourie T, S Ruiz A, Alger J, Mier AR, Tang W, Aidoo-Frimpong G, Nanono J, Montealto JJA, Ezezika O, Kåks P, Shan W, Mier-Alpano JD, Marley G, Chen E, Tucker JD

PloS one2026

DOI: 10.1371/journal.pone.0339359 PMID: 41511960

Barriers and facilitators to knowledge and awareness around sexually transmitted and blood-borne infections (STBBIs)–related preventive measures among Black populations across Canada: a systematic review

Girmay B, Strong SL, Bryant D, Ezezika O

Canadian Journal of Public Health2026Senior author

DOI: 10.17269/s41997-025-01069-7

Exploring vaccination attitudes in African communities in Canada: A mixed-methods study protocol.

Ezezika O, Pellitier Z, Muhimpundu S, Daboud C, Mengistu M, Olorunbiyi O, Hines C, Wondrad M, Kearon J, Okwei R, Anukam K, Alaazi D, Arku G

PloS one2025First author

DOI: 10.1371/journal.pone.0319584 PMID: 40294002

Public Health Measures and Black Communities in Canada: Understanding Barriers and Facilitators During the COVID-19 Pandemic.

Ezezika O, Graham T, Pellitier ZC, Mengistu M, Girmay B, Thompson C

Journal of racial and ethnic health disparities2025First author

DOI: 10.1007/s40615-025-02744-8 PMID: 41269656

Barriers and facilitators to the implementation of vitamin A supplementation programs in Africa: A systematic review.

Ezezika O, Quibrantar S, Okolie A, Ariyo O, Marson A

Nutrition and health2025First author

DOI: 10.1177/02601060241294133 PMID: 39584721

Barriers and facilitators of messaging platforms as a means of maternal support and care in rural communities: A systematic review

Rahman S, Okolie A, Bryant D, Ameyaw EK, Ezezika O

PLoS ONE20251 citationsSenior author

DOI: 10.1371/journal.pone.0336168

A protocol for modeling the factors influencing the deployment of the COVID-19 vaccine across African countries.

Ezezika O, Kotsaftis TS, Amponsah-Dacosta E, Demi S, Omwenga EO, Mong'are S, Zaranyika T, Ariyo O, Ngianga-Bakwin K, Ameyaw EK

PloS one2024First author

DOI: 10.1371/journal.pone.0311800 PMID: 39509409

Tracking Implementation Outcomes of an Intensive Case Management Program for HIV: Protocol for a Mixed Methods Study.

Mengistu M, Tom K, Gebremikael L, Massaquoi N, Ezezika O

JMIR research protocols2024Senior author

DOI: 10.2196/57452 PMID: 39612213

Upstream factors impacting COVID-19 vaccination rates across Africa: A systematic review protocol.

Ezezika O, Kotsaftis TS, Marson A

PloS one2024First author

DOI: 10.1371/journal.pone.0310884 PMID: 39321170

Improving Integrated Knowledge Translation for Evidence-Informed Health Care by Attending to Power

Co-investigatorCIHR2025Project Grant

Principal investigators: Kothari, Anita R; Gainforth, Heather L

Keywords: Equity; Integrated Knowledge Translation Research; Intersectionality; Knowledge Generation Research; Power

$355,726

Health Equity and Implementation Science in Canada

SupervisorCIHR2025Undergraduate Student Research Awards (USRA)

Principal investigators: Woldetinsae, Lulya

Keywords: Black; Blood-Borne; Canada; Communities; Culturally Responsive; Educational Workshop; Infections; Knowledge Translation; Sexually Transmitted; Stbbi-Related Knowledge

$6,000

Strengthening Pandemic Vaccine Preparedness in Africa (SPAVPA) 2.0: Lessons from African countries with high and low COVID-19 vaccination rates

Nominated PICIHR2025Project Grant

Principal investigators: Ezezika, Obidimma

Keywords: Pandemic

$313,651

Strengthening Pandemic Vaccine Preparedness in Africa (SPAVPA): Lessons from African countries with high and low COVID-19 vaccination rates

Nominated PICIHR2024Project Grant - Priority Announcement: Global Health Research - CRPPHE

Principal investigators: Ezezika, Obidimma; Amponsah-Dacosta, Edina; Ariyo, Oluwaseun; Luginaah, Isaac N; Malande, Oliver O

Keywords: Pandemic

$100,000

Understanding the Evolution of Vaccine Hesitancy Among African Immigrants in Canada: A Case Study in South Western Ontario

Principal investigatorSSHRC2024Insight Grants

Principal investigators: Ezezika, Obidimma

Keywords: immigration; health equity; Black health; participatory action research; vaccine

$34,378

Knowledge mobilization around Sexually Transmitted and Blood-Borne Infections (STBBIs) among the Black community in Canada

Principal investigatorSSHRC2022Partnership Engage Grants

Principal investigators: Ezezika, Obidimma

Keywords: knowledge translation; focus group; blood-borne infection; Black communities; equity

$23,185

A Theoretical Model of Cannabis Cessation: An Extension of the Theory of Planned Behaviour

Co-investigatorSSHRC2022SSHRC Doctoral Awards

Principal investigators: MacQuarrie, Amy

Keywords: cannabis; theory of planned behaviour; social norms; perceived risk

$52,460

From CIHR, NSERC and SSHRC funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998, including their latest published competition results.

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 2025

Subject: Prospective PhD student: Pandemic Dear Professor Ezezika, 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 "Pairwise and three-country comparisons of high and low COVID-19 vaccination rates in 12 African countries: a mixed-method study protocol." (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 "Strengthening Pandemic Vaccine Preparedness in Africa (SPAVPA) 2.0: Lessons from African countries with high and low COVID-19 vaccination rates" (2025), 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 November 9, 2025 from the university directory, publication records and CIHR, NSERC and SSHRC funding.

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Obidimma Ezezika

Research

Latest papers

Latest funding

Pairwise and three-country comparisons of high and low COVID-19 vaccination rates in 12 African countries: a mixed-method study protocol.

Global learning opportunities within social innovation in health (GLOWS): A modified Delphi process to identify and pilot core competencies for learning.

Barriers and facilitators to knowledge and awareness around sexually transmitted and blood-borne infections (STBBIs)–related preventive measures among Black populations across Canada: a systematic review

Exploring vaccination attitudes in African communities in Canada: A mixed-methods study protocol.

Public Health Measures and Black Communities in Canada: Understanding Barriers and Facilitators During the COVID-19 Pandemic.

Barriers and facilitators to the implementation of vitamin A supplementation programs in Africa: A systematic review.

Barriers and facilitators of messaging platforms as a means of maternal support and care in rural communities: A systematic review

A protocol for modeling the factors influencing the deployment of the COVID-19 vaccine across African countries.

Tracking Implementation Outcomes of an Intensive Case Management Program for HIV: Protocol for a Mixed Methods Study.

Upstream factors impacting COVID-19 vaccination rates across Africa: A systematic review protocol.

Improving Integrated Knowledge Translation for Evidence-Informed Health Care by Attending to Power

Health Equity and Implementation Science in Canada

Strengthening Pandemic Vaccine Preparedness in Africa (SPAVPA) 2.0: Lessons from African countries with high and low COVID-19 vaccination rates

Strengthening Pandemic Vaccine Preparedness in Africa (SPAVPA): Lessons from African countries with high and low COVID-19 vaccination rates

Understanding the Evolution of Vaccine Hesitancy Among African Immigrants in Canada: A Case Study in South Western Ontario

Knowledge mobilization around Sexually Transmitted and Blood-Borne Infections (STBBIs) among the Black community in Canada

A Theoretical Model of Cannabis Cessation: An Extension of the Theory of Planned Behaviour

Frequent collaborators

Dianne Bryant

Dianne Bryant

Joanne Kearon

Dominic Alaazi

Notisha Massaquoi

Notisha Massaquoi