Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 23 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the 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
Tuberculosis
Vaccinology
Immunology
Clinical Trials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,746
12,964
0.485
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Systems Virology
Emerging Viruses
HIV
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,271
14,697
0.725
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Mycobacterium tuberculosis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,996
5,408
0.318
* Total Citation Counts Rankings
Ranking Based On Selection: 4
virology
immunology
host/pathogen interactions
vaccines
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,826
7,997
0.475
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Health Informatics
Epidemiology
Population Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,965
4,475
0.449
* Total Citation Counts Rankings
Ranking Based On Selection: 6
HIV
Immunology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,229
1,885
0.584
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Traditional Medicine
Policy Engagement
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,739
686
0.394
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Immunometabolism
tuberculosis
biomarkers
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,358
966
0.711
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Tuberculosis
Host pathogen interaction
Immunology
Biochemistry
Molecular biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
928
646
0.696
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Public Health
Population Science
Epidemiology
Programme Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
490
455
0.929
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Statistics
Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
319
290
0.909
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
311
306
0.984
* Total Citation Counts Rankings
Ranking Based On Selection: 13
family issues
sexual and reproductive justice and freedom
Gender issues
social demography and epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
191
164
0.859
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Clinical Sciences and Immunology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
185
167
0.903
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Virology
Medicine
Microfluidics
Infectious Diseases
Immunometabolism
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
120
114
0.950
* Total Citation Counts Rankings
Ranking Based On Selection: 16
social science
mental health
men's sexual reproductive health
adolescent health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
110
108
0.982
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Women and girls' health
Gender and migration
Health systems strengthening
HIV/AIDS
Differentiated care services
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
109
109
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 18
HIV
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
106
90
0.849
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Medical Microbiology
Virology
Histopathology
Environmental Science
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97
97
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Development Interventions
livelihoods security and rural poverty
climate change and HIV care utilization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97
93
0.959
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Poverty
Education and other Social Issues
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58
47
0.810
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Medical Statistics
Infectious Diseases
Surveillance Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38
38
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Immunology
biochemistry
microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23
21
0.913
* Total Citation Counts Rankings
Rankings
27,361
75
1
Ranking Based On Selection: 1
Willem Hanekom
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,746
12,964
0.485
* Total Citation Counts Rankings
Rankings
40,731
126
2
Ranking Based On Selection: 2
Alex Sigal
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,271
14,697
0.725
* Total Citation Counts Rankings
Rankings
51,708
168
3
Ranking Based On Selection: 3
A Pym
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,996
5,408
0.318
* Total Citation Counts Rankings
Rankings
52,400
172
4
Ranking Based On Selection: 4
Thumbi Ndung'U
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,826
7,997
0.475
virology
immunology
host/pathogen interactions
vaccines
* Total Citation Counts Rankings
Rankings
100,924
360
5
Ranking Based On Selection: 5
Kobus Herbst
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,965
4,475
0.449
* Total Citation Counts Rankings
Rankings
309,075
1,370
6
Ranking Based On Selection: 6
Henrik Kløverpris
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,229
1,885
0.584
* Total Citation Counts Rankings
Rankings
493,540
2,380
7
Ranking Based On Selection: 7
Nceba Gqaleni
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,739
686
0.394
* Total Citation Counts Rankings
Rankings
577,670
2,864
8
Ranking Based On Selection: 8
Bridgette Cumming
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,358
966
0.711
Immunometabolism
tuberculosis
biomarkers
* Total Citation Counts Rankings
Rankings
713,446
3,652
9
Ranking Based On Selection: 9
Md Aejazur Rahman
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
928
646
0.696
Tuberculosis
Host pathogen interaction
Immunology
Biochemistry
Molecular biology
* Total Citation Counts Rankings
Rankings
937,527
5,121
10
Ranking Based On Selection: 10
RESIGN GUNDA
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
490
455
0.929
Public Health
Population Science
Epidemiology
Programme Management
* Total Citation Counts Rankings
Rankings
1,112,060
6,597
11
Ranking Based On Selection: 11
Stephen Olivier
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
319
290
0.909
* Total Citation Counts Rankings
Rankings
1,122,376
6,692
12
Ranking Based On Selection: 12
Jared Mackenzie
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
311
306
0.984
* Total Citation Counts Rankings
Rankings
1,329,981
8,523
13
Ranking Based On Selection: 13
Ntombizonke A. Gumede
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
191
164
0.859
family issues
sexual and reproductive justice and freedom
Gender issues
social demography and epidemiology
* Total Citation Counts Rankings
Rankings
1,343,661
8,633
14
Ranking Based On Selection: 14
Thabo Mpotje
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
185
167
0.903
* Total Citation Counts Rankings
Rankings
1,527,617
10,341
15
Ranking Based On Selection: 15
Tawanda Mandizvo
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
120
114
0.950
Virology
Medicine
Microfluidics
Infectious Diseases
Immunometabolism
* Total Citation Counts Rankings
Rankings
1,562,618
10,612
16
Ranking Based On Selection: 16
Manono Luthuli
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
110
108
0.982
social science
mental health
men's sexual reproductive health
adolescent health
* Total Citation Counts Rankings
Rankings
1,565,866
10,636
17
Ranking Based On Selection: 17
Rujeko Samanthia Chidawanyika Nee Chimukuche|Rujeko Samanthia Chidawanyika
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
109
109
1.000
Women and girls' health
Gender and migration
Health systems strengthening
HIV/AIDS
Differentiated care services
* Total Citation Counts Rankings
Rankings
1,578,269
10,742
18
Ranking Based On Selection: 18
Omolara Baiyegunhi
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
106
90
0.849
* Total Citation Counts Rankings
Rankings
1,612,264
11,078
19
Ranking Based On Selection: 19
Delon Naicker
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97
97
1.000
Medical Microbiology
Virology
Histopathology
Environmental Science
Chemistry
* Total Citation Counts Rankings
Rankings
1,612,834
11,083
20
Ranking Based On Selection: 20
Kingsley Stephen Orievulu
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97
93
0.959
Development Interventions
livelihoods security and rural poverty
climate change and HIV care utilization
* Total Citation Counts Rankings
Rankings
1,797,808
12,765
21
Ranking Based On Selection: 21
Nompumelelo Ngobese
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58
47
0.810
Poverty
Education and other Social Issues
* Total Citation Counts Rankings
Rankings
1,922,323
14,025
22
Ranking Based On Selection: 22
Lusanda Mazibuko
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38
38
1.000
* Total Citation Counts Rankings
Rankings
2,051,500
15,294
23
Ranking Based On Selection: 23
Bongiwe Mahlobo
Africa Health Research Institute
Somkhele, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23
21
0.913
Immunology
biochemistry
microbiology