E A Usanga

1.5k total citations
18 papers, 835 citations indexed

About

E A Usanga is a scholar working on Genetics, Management of Technology and Innovation and Hematology. According to data from OpenAlex, E A Usanga has authored 18 papers receiving a total of 835 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Genetics, 6 papers in Management of Technology and Innovation and 6 papers in Hematology. Recurrent topics in E A Usanga's work include Hemoglobinopathies and Related Disorders (7 papers), Blood donation and transfusion practices (6 papers) and Iron Metabolism and Disorders (5 papers). E A Usanga is often cited by papers focused on Hemoglobinopathies and Related Disorders (7 papers), Blood donation and transfusion practices (6 papers) and Iron Metabolism and Disorders (5 papers). E A Usanga collaborates with scholars based in Nigeria, Estonia and Kuwait. E A Usanga's co-authors include Ene Metspalu, Toomas Kivisild, Richard Villems, Jüri Parik, António Brehm, Reem Ameen, Erwan Pennarun, Alexandra Rosa, Maere Reidla and Sarabjit Mastana and has published in prestigious journals such as The American Journal of Human Genetics, Molecular Biology and Evolution and Transfusion.

In The Last Decade

E A Usanga

17 papers receiving 781 citations

Peers

E A Usanga

GENET

ARCHE

PPCH

GENET

R Brdička Czechia

Esther Esteban Spain

Ana María López‐Parra Spain

J.M. Naidu India

Estella S. Poloni Switzerland

Abdul Salam M. Sofro Indonesia

Pierangela Grignani Italy

Carlo Previderè Italy

Badal Dey India

Claudia Moreau Canada

R Brdička Czechia

E A Usanga

332 ×0.6

GENET

85 ×0.3

ARCHE

291 ×1.8

89 ×1.0

PPCH

48 ×0.7

GENET

Citations per year, relative to E A Usanga E A Usanga (= 1×) peers R Brdička

Countries citing papers authored by E A Usanga

Since Specialization

Citations

This map shows the geographic impact of E A Usanga's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by E A Usanga with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites E A Usanga more than expected).

Fields of papers citing papers by E A Usanga

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by E A Usanga. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by E A Usanga. The network helps show where E A Usanga may publish in the future.

Co-authorship network of co-authors of E A Usanga

This figure shows the co-authorship network connecting the top 25 collaborators of E A Usanga. A scholar is included among the top collaborators of E A Usanga based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with E A Usanga. E A Usanga is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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18 of 18 papers shown

Osim, E. E., et al.. (2019). Effect of Pecuniary Benefit on Some Haematological and Iron-related Parameters of Blood Donations: A Study at the University of Calabar Teaching Hospital Blood Donor Clinic, Calabar, Nigeria. Journal of Applied Sciences. 19(8). 803–810.

Usanga, E A, et al.. (2017). Iron Status of Pregnant Women in Rural and Urban Communities of Cross River State, South-South Nigeria.. PubMed. 31(2). 121–125. 13 indexed citations

Nna, Victor Udo, et al.. (2015). Response of Cellular Elements to Frequent Blood Donations among Male Subjects in Calabar, Nigeria. 11(1). 11–19. 5 indexed citations

Osim, E. E., et al.. (2015). Various Iron Deficiency Stages among Male Blood Donors in Donor Bleeding Bay Calabar, Cross River State, Nigeria. British Journal of Medicine and Medical Research. 10(6). 1–7. 3 indexed citations

Usanga, E A, et al.. (2008). Prevalence and Risk Factors of Anaemia Among Pregnant women in Nigeria. 2(1). 14–19. 38 indexed citations

Roostalu, Urmas, Ildus Kutuev, Ene Metspalu, et al.. (2006). Origin and Expansion of Haplogroup H, the Dominant Human Mitochondrial DNA Lineage in West Eurasia: The Near Eastern and Caucasian Perspective. Molecular Biology and Evolution. 24(2). 436–448. 140 indexed citations

Kivisild, Toomas, Maere Reidla, Ene Metspalu, et al.. (2004). Ethiopian Mitochondrial DNA Heritage: Tracking Gene Flow Across and Around the Gate of Tears. The American Journal of Human Genetics. 75(5). 752–770. 199 indexed citations

Kivisild, Toomas, Siiri Rootsi, Mait Metspalu, et al.. (2003). The Genetic Heritage of the Earliest Settlers Persists Both in Indian Tribal and Caste Populations. The American Journal of Human Genetics. 72(2). 313–332. 267 indexed citations

Usanga, E A, et al.. (2003). Glucose-6-phosphate dehydrogenase (G6PD) mutations and UDP-glucuronosyltransferase promoter polymorphism among G6PD deficient Kuwaitis. Blood Cells Molecules and Diseases. 31(2). 201–205. 20 indexed citations

10.

Usanga, E A & Reem Ameen. (2000). Glucose-6-Phosphate Dehydrogenase Deficiency in Kuwait, Syria, Egypt, Iran, Jordan and Lebanon. Human Heredity. 50(3). 158–161. 40 indexed citations

11.

Usanga, E A, et al.. (1997). Increased platelet factor 3 activity in Plasmodium falciparum malaria.. PubMed. 74(8). 527–9. 4 indexed citations

12.

Usanga, E A, et al.. (1993). Blood donation and patterns of use in southeastern Nigeria. Transfusion. 33(4). 330–332. 26 indexed citations

13.

Ezedinachi, Emmanuel, et al.. (1991). Correlation between in vivo and in vitro response of chloroquine-resistant Plasmodium falciparum in Calabar, South-Eastern Nigeria. Acta Tropica. 49(2). 119–125. 12 indexed citations

14.

Ezedinachi, Emmanuel, et al.. (1991). New trends in chloroquine efficacy in the treatment of malaria: chloroquine-resistant Plasmodium falciparum in Anambra and Benue States of Nigeria.. PubMed. 37(6). 180–6. 2 indexed citations

15.

Usanga, E A, et al.. (1990). Prevalence and titre of ABO haemolysin antibodies in pregnant Nigerian women.. PubMed. 67(6). 437–41. 3 indexed citations

16.

Gc, Ejezie, et al.. (1990). Malaria and its treatment in rural villages of Aboh Mbaise, Imo State, Nigeria. Acta Tropica. 48(1). 17–24. 39 indexed citations

17.

Usanga, E A. (1990). Iron stores of Nigerian blood donors as assessed by serum ferritin concentration.. PubMed. 36(7). 170–3. 12 indexed citations

18.

Usanga, E A, et al.. (1983). Evaluation of serum ferritin levels and other hematological parameters in a Nigerian population.. PubMed. 75(9). 885–9. 12 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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