Citation Rankings
Highly Cited Researchers
Africa Highly Cited Researchers Citation Medical and Health Sciences Medical and Health Sciences / Veterinary Sciences Rankings 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Total Citation Counts Rankings
Ranking Based On Selection :1
virology
epidemiology
diagnostics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,437
8,455
0.485
* Total Citation Counts Rankings
Ranking Based On Selection :2
Ticks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,421
4,222
0.293
* Total Citation Counts Rankings
Ranking Based On Selection :3
Savanna ecology
global change
fire ecology
vegetation dynamics
earth-system feedbacks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,908
8,601
0.618
* Total Citation Counts Rankings
Ranking Based On Selection :4
ethnoveterinary medicine
biological activity
toxicity
medicinal plants
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,305
7,757
0.630
* Total Citation Counts Rankings
Ranking Based On Selection :5
Histology
cell biology
histochemistry
immunohistochemistry
embryology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,275
6,006
0.533
* Total Citation Counts Rankings
Ranking Based On Selection :6
Veterinary Public Health
Ecosystem and Population Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,471
5,040
0.532
* Total Citation Counts Rankings
Ranking Based On Selection :7
Veterinary Infectious Diseases and Zoonoses
Host-pathogen interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,745
5,073
0.580
* Total Citation Counts Rankings
Ranking Based On Selection :8
Animal Physiology
Thermoregulation and heat balance
Digestion
Energetics and locomotion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,542
1,077
0.126
* Total Citation Counts Rankings
Ranking Based On Selection :9
Animal breeding and genetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,700
3,987
0.518
* Total Citation Counts Rankings
Ranking Based On Selection :10
Theriogenology
Animal Production
Asisted Reproductive Technology
Reproductive Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,085
6,844
0.966
* Total Citation Counts Rankings
Ranking Based On Selection :11
Breeding and Genetics
Behaviour
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,073
2,570
0.363
* Total Citation Counts Rankings
Ranking Based On Selection :12
Veterinary Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,085
3,115
0.512
* Total Citation Counts Rankings
Ranking Based On Selection :13
Animal science
Production animal physiology
Meat science
Agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,085
2,872
0.472
* Total Citation Counts Rankings
Ranking Based On Selection :14
Animal Breeding
Poultry Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,059
5,310
0.876
* Total Citation Counts Rankings
Ranking Based On Selection :15
Meat lipids
Meat quality
Animal production
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,541
3,455
0.624
* Total Citation Counts Rankings
Ranking Based On Selection :16
biotechnologie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,477
3,569
0.652
* Total Citation Counts Rankings
Ranking Based On Selection :17
Pharmacology
Toxicology
Natural products research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,875
2,726
0.559
* Total Citation Counts Rankings
Ranking Based On Selection :18
Animal health
Animal production
Animal nutrition
Livestock extension
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,803
2,175
0.453
* Total Citation Counts Rankings
Ranking Based On Selection :19
Veterinary pathology
Respiratory pathology
Diagnostic pathology
toxicopathology
One health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,757
3,160
0.664
* Total Citation Counts Rankings
Ranking Based On Selection :20
bioenergy
veterinary & agricultural microbiology
environmental microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,687
2,462
0.525
* Total Citation Counts Rankings
Ranking Based On Selection :21
Dendritic cells
Natural Products
Macrophages
Pecten Oculi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,623
2,491
0.539
* Total Citation Counts Rankings
Ranking Based On Selection :22
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,429
2,191
0.495
* Total Citation Counts Rankings
Ranking Based On Selection :23
Veterinary epidemiology
Animal diseases
Zoonotic diseases
Veterinary medicine
Infectious diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,415
2,215
0.502
* Total Citation Counts Rankings
Ranking Based On Selection :24
Experimental Toxicology
Liver Toxicity
In Vitro Systems for Toxicity Testings
Systems Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,329
2,403
0.555
* Total Citation Counts Rankings
Ranking Based On Selection :25
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,317
1,942
0.450
* Total Citation Counts Rankings
Rankings
47,387
151
4
Ranking Based On Selection: 1
Janusz Tadeusz Paweska
National Institute for Communicable Diseases
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,437
8,455
0.485
virology
epidemiology
diagnostics
* Total Citation Counts Rankings
Rankings
61,009
204
16
Ranking Based On Selection: 2
Ivan Horak
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,421
4,222
0.293
* Total Citation Counts Rankings
Rankings
64,001
218
31
Ranking Based On Selection: 3
Sally Archibald
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,908
8,601
0.618
Savanna ecology
global change
fire ecology
vegetation dynamics
earth-system feedbacks
* Total Citation Counts Rankings
Rankings
74,762
248
22
Ranking Based On Selection: 4
Lyndy Mcgaw
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,305
7,757
0.630
ethnoveterinary medicine
biological activity
toxicity
medicinal plants
* Total Citation Counts Rankings
Rankings
83,114
109
3
Ranking Based On Selection: 5
Abd El-Hamid Osman
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,275
6,006
0.533
Histology
cell biology
histochemistry
immunohistochemistry
embryology
* Total Citation Counts Rankings
Rankings
101,828
7
1
Ranking Based On Selection: 6
Rudovick Kazwala
Sokoine University of Agriculture
Morogoro, Tanzania
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,471
5,040
0.532
Veterinary Public Health
Ecosystem and Population Health
* Total Citation Counts Rankings
Rankings
111,503
80
20
Ranking Based On Selection: 7
Gobena Ameni
Addis Ababa University
Addis Ababa, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,745
5,073
0.580
Veterinary Infectious Diseases and Zoonoses
Host-pathogen interactions
* Total Citation Counts Rankings
Rankings
114,586
33
8
Ranking Based On Selection: 8
Geoffrey M. Maloiy
University of Nairobi
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,542
1,077
0.126
Animal Physiology
Thermoregulation and heat balance
Digestion
Energetics and locomotion
* Total Citation Counts Rankings
Rankings
128,587
486
73
Ranking Based On Selection: 9
Kennedy Dzama
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,700
3,987
0.518
Animal breeding and genetics
* Total Citation Counts Rankings
Rankings
140,577
219
8
Ranking Based On Selection: 10
Ayman Abdel Aziz Swelum
Zagazig University
Sharqia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,085
6,844
0.966
Theriogenology
Animal Production
Asisted Reproductive Technology
Reproductive Biology
* Total Citation Counts Rankings
Rankings
140,829
549
80
Ranking Based On Selection: 11
Schalk Cloete
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,073
2,570
0.363
Breeding and Genetics
Behaviour
* Total Citation Counts Rankings
Rankings
164,549
650
55
Ranking Based On Selection: 12
Geoffrey T Fosgate
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,085
3,115
0.512
Veterinary Epidemiology
* Total Citation Counts Rankings
Rankings
164,550
651
56
Ranking Based On Selection: 13
Edward C. Webb
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,085
2,872
0.472
Animal science
Production animal physiology
Meat science
Agriculture
* Total Citation Counts Rankings
Rankings
165,238
9
1
Ranking Based On Selection: 14
Khalid Mohammed Elamin
Gezira University
Wad Medani, Sudan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,059
5,310
0.876
Animal Breeding
Poultry Science
* Total Citation Counts Rankings
Rankings
180,622
737
99
Ranking Based On Selection: 15
Cletos Mapiye
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,541
3,455
0.624
Meat lipids
Meat quality
Animal production
* Total Citation Counts Rankings
Rankings
182,739
33
10
Ranking Based On Selection: 16
Semia Ellouz Chaabouni
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,477
3,569
0.652
* Total Citation Counts Rankings
Rankings
204,453
161
23
Ranking Based On Selection: 17
Adeolu Adedapo
University of Ibadan
Ibadan, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,875
2,726
0.559
Pharmacology
Toxicology
Natural products research
* Total Citation Counts Rankings
Rankings
207,424
162
2
Ranking Based On Selection: 18
Ifeanyi Charles Okoli
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,803
2,175
0.453
Animal health
Animal production
Animal nutrition
Livestock extension
* Total Citation Counts Rankings
Rankings
209,330
167
24
Ranking Based On Selection: 19
Benjamin O. Emikpe
University of Ibadan
Ibadan, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,757
3,160
0.664
Veterinary pathology
Respiratory pathology
Diagnostic pathology
toxicopathology
One health
* Total Citation Counts Rankings
Rankings
212,385
172
1
Ranking Based On Selection: 20
Elijah I. Ohimain
Niger Delta University
Wilberforce Island, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,687
2,462
0.525
bioenergy
veterinary & agricultural microbiology
environmental microbiology
* Total Citation Counts Rankings
Rankings
215,135
84
23
Ranking Based On Selection: 21
Stephen Kiama Gitahi
University of Nairobi
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,623
2,491
0.539
Dendritic cells
Natural Products
Macrophages
Pecten Oculi
* Total Citation Counts Rankings
Rankings
223,790
444
9
Ranking Based On Selection: 22
Khaled Ghareeb
South Valley University
Qena, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,429
2,191
0.495
* Total Citation Counts Rankings
Rankings
224,503
943
82
Ranking Based On Selection: 23
Peter N Thompson
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,415
2,215
0.502
Veterinary epidemiology
Animal diseases
Zoonotic diseases
Veterinary medicine
Infectious diseases
* Total Citation Counts Rankings
Rankings
228,594
466
12
Ranking Based On Selection: 24
Seddik Hammad
South Valley University
Qena, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,329
2,403
0.555
Experimental Toxicology
Liver Toxicity
In Vitro Systems for Toxicity Testings
Systems Biology
* Total Citation Counts Rankings
Rankings
229,217
95
2
Ranking Based On Selection: 25
Alexander Kahi
Egerton University
Njoro, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,317
1,942
0.450