OA Ejele

University of Port Harcourt

Also at University of Port Harcourt Teaching Hospitalfrom their recent papers

Publishing since 2002, latest 2025

Epidemiology
Hematology
Infectious Diseases
Emergency Medicine
Hepatology
Management of Technology and Innovation

Their record on OpenAlex

Publications: 422002–2025
Citations: 416to those papers
h-index: 13i10-index 14
Field-weighted impact: 0.321.00 is the world average
World top 10%: 2%1 of 42 scored papers
Open access: 64%27 papers free to read

By year

Papers, and the citations to them

Publications, left axisCitations to that year’s papers, right axis2026 still in progress

Career

On their papers

Every institution they have given on a paper.

Publications

42 in all

CHANGES IN PACKED CELL VOLUME AFTER GYNAECOLOGICAL SURGERIES: A COMPARISON OF DAY 1 AND DAY 2 VALUES.
2025PubMedJournalOpen access0 citations
To Determine the Correlation between D-Dimer and CD4+ T-Cell Count in HIV Treatment-Naive and Treatment-Experienced Patients in Port-Harcourt, Nigeria
2020Saudi Journal of Pathology and MicrobiologyJournalOpen access

Download CV:PDFWord

Citations received each year

Peerford

To all their work, old papers included. Google Scholar also counts citations from theses, books and web pages, so its line runs higher.

What they work on

From the classification of each paper

Subfields

Epidemiology1638%
Hematology1126%
Infectious Diseases1126%
Emergency Medicine717%
Hepatology717%
Management of Technology and Innovation717%
Virology717%
Genetics410%
Obstetrics and Gynecology410%
Physiology410%

Health Sciences
Life Sciences
Social Sciences

Topics most written on

Hepatitis B Virus Studies11
Blood groups and transfusion8
HIV/AIDS Research and Interventions8
Blood donation and transfusion practices7
HIV Research and Treatment7
HIV-related health complications and treatments7
Hemoglobinopathies and Related Disorders4
Hepatitis C virus research4
Pregnancy and preeclampsia studies4
Erythrocyte Function and Pathophysiology3
Hepatitis Viruses Studies and Epidemiology3
HIV, Drug Use, Sexual Risk3

Who they write with

Their most frequent co-authors, and the papers those co-authors share

Where their co-authors are

5% of their papers have a co-author abroad

papers co-written1111111Home

Most frequent partner countries

United Kingdom1
United States1

Papers with at least one author in that country.

Institutions written with most

University of Port Harcourt Teaching HospitalNG35 papers
University of BeninNG3 papers
Nnamdi Azikiwe UniversityNG2 papers
Bolton NHS Foundation TrustGB1 paper
Royal Bolton HospitalGB1 paper
Walden UniversityUS1 paper
Federal Medical CentreNG1 paper
University Of Calabar Teaching HospitalNG1 paper
Niger Delta UniversityNG1 paper
University College Hospital, IbadanNG1 paper

Where they publish

PubMed8
Nigerian Journal of Clinical Practice4
Highland Medical Research Journal3
Nigerian Journal of Medicine3
Nigerian Postgraduate Medical Journal3
Sahel Medical Journal3
Nigerian Journal of Orthopaedics and Trauma

Development goals addressed

From each paper’s title and abstract

3Good health and well-being24
1No poverty3
2Zero hunger3
4Quality education1
10Reduced inequalities1

Most cited

Some haematological parameters in Human Immunodeficiency Virus (HIV) infected Africans: the Nigerian perspective
Nigerian Journal of Medicine3
200653 citationsOpen access · Gold
The risk of transfusion-transmissible viral infections in the Niger-Delta area of Nigeria
Sahel Medical Journal3
200537 citationsOpen access · Diamond
The prevalence of hepatitis B surface antigenaemia in HIV positive patients in the Niger Delta Nigeria.

Autoimmune Haemolytic Anaemia in Patients with Cancer Diagnoses

2019Journal of Cancer and Tumor InternationalJournalOpen access0 citations10.9734/jcti/2018/v8i230095

Promoting Public Health Campaign on Awareness and Screening for Multiple Myeloma in Nigeria

2018Archives of Hematology and Blood DiseasesJournalOpen accessSenior author2 citations10.22259/2639-3581.0102003

Associations between pre‐eclampsia and protein C and protein S levels among pregnant Nigerian women

2017International Journal of Gynecology & ObstetricsJournalSenior author16 citations10.1002/ijgo.12085

Haematologic Profile of Patients with Chronic Kidney Disease in Port Harcourt, South-South Nigeria

2017International Blood Research & ReviewsJournalOpen accessSenior author1 citation10.9734/ibrr/2017/35453

Soluble Transferrin Receptor levels of Apparently Healthy Adults in Port Harcourt, Nigeria

2017Annals of Pathology and Laboratory MedicineJournalOpen accessSenior author0 citations10.21276/apalm.1238

Visual and Auditory Complications of Chronic Myeloid Leukemia: A Case Report

2013Journal of Advances in Medicine and Medical ResearchJournalOpen accessFirst authorCorresponding5 citations10.9734/bjmmr/2013/2259

Seroprevalence of hepatitis C virus in the Niger Delta of Nigeria

2006Nigerian Postgraduate Medical JournalJournalFirst author18 citations10.4103/1117-1936.180493

Splenic changes in sickle cell anaemia

2006Nigerian Journal of MedicineJournalOpen accessSenior author8 citations10.4314/njm.v15i1.37110

Year impact of highly active antiretroviral therapy on quality of life of HIV-infected Nigerians

2006Highland Medical Research JournalJournalOpen accessSenior author3 citations10.4314/hmrj.v3i2.33875

DU phenotype in Nigeria: a review

2006Nigerian Journal of Orthopaedics and TraumaJournalSenior author0 citations10.4314/njotra.v4i1.29244

Some morphometric changes associated with sickle cell anaemia in Niger-Delta Region of Nigeria

2005Journal of Experimental and Clinical AnatomyJournalOpen accessFirst author2 citations10.4314/jeca.v3i1.30899

A Survey Of The Status Of Common Rhesus Phenotypes In Port Harcourt

2005Highland Medical Research JournalJournalOpen accessSenior author0 citations10.4314/hmrj.v2i1.33832

Amodiaquine – Induced Thrombocytopenia

2005Highland Medical Research JournalJournalOpen accessSenior author0 citations10.4314/hmrj.v2i1.33846

ABO and rhesus antigens in a cosmopolitan Nigeria population.

2004PubMedJournalSenior author19 citations

Lupus anticoagulant in Nigerian women with preeclampsia

2004West African Journal of MedicineJournalOpen access11 citations10.4314/wajm.v22i3.27958

Red Cell Antigens and the Practice of Transfusion Medicine in Nigeria - A review

2004Nigerian Journal of Orthopaedics and TraumaJournalSenior author1 citation10.4314/njotra.v2i2.29203

Prevalence of D u Phenotype amongst Rhesus Negative Females in Port Harcourt, Nigeria

2003African Journal of Reproductive HealthJournalOpen access3 citations10.2307/3583342

Haematological Profile In Chronic Alcohol Consumers

2003Nigerian Journal of Clinical PracticeJournalOpen accessSenior author2 citations

Rhesus Immunization in Nigeria: Current Status

2003Nigerian Journal of Clinical PracticeJournalOpen accessSenior author1 citation

Prevalence of lupus anticoagulant in multiparous women in Benin City, Nigeria

2003Nigerian Postgraduate Medical JournalJournalOpen access3 citations10.4103/1117-1936.171608

Is D U Phenotype Testing A Necessity In Blood Bank Practice In Nigeria

2002Nigerian Journal of Clinical PracticeJournalOpen accessSenior author1 citation

Nigerian Medical Practitioner2

How it can be read

64% free to read

Diamond 15 · 36%Free to read and to publish
Gold 4 · 10%In an open-access journal
Hybrid 2 · 5%Open in a subscription journal
Bronze 1 · 2%Free to read, no open licence
Green 5 · 12%A copy in a repository
Closed 15 · 36%Behind a paywall

The prevalence of hepatitis B surface antigen (HBsAg) among prospective blood donors and patients in Port Harcourt, Nigeria.

PubMed3

200432 citations

The risk of transfusion-acquired hepatitis-C virus infection among blood donors in Port Harcourt: the question of blood safety in Nigeria.

PubMed3

200629 citationsWorld top 10%