The Citation Rankings (Highly Cited Researchers) 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
Applied and Environmental Microbiology
Water Quality
Antimicrobial Resistance.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,444
18,871
0.688
* Total Citation Counts Rankings
Ranking Based On Selection :2
Microbial ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,466
12,066
0.474
* Total Citation Counts Rankings
Ranking Based On Selection :3
microbiology
pneumonia
tuberculosis
microbiome
diagnostics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,040
14,000
0.559
* Total Citation Counts Rankings
Ranking Based On Selection :4
Yeast Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,477
6,337
0.309
* Total Citation Counts Rankings
Ranking Based On Selection :5
Microbiology
lactic acid bacteria
antimicrobial peptides
bacteriocins
probiotics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,313
7,972
0.413
* Total Citation Counts Rankings
Ranking Based On Selection :6
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,090
5,739
0.380
* Total Citation Counts Rankings
Ranking Based On Selection :7
yeast & fungal bioolgy and biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,458
2,822
0.210
* Total Citation Counts Rankings
Ranking Based On Selection :8
Neonatal sepsis
Bloodstream infection
Antimicrobial resistance & stewardship
Healthcare-associated infection
Infection preve
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,979
12,397
0.955
* Total Citation Counts Rankings
Ranking Based On Selection :9
Fresh Produce Safety and Quality
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,947
5,701
0.477
* Total Citation Counts Rankings
Ranking Based On Selection :10
land reform
agriculture
farm workers
land grabbing
redistribution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,417
5,703
0.500
* Total Citation Counts Rankings
Ranking Based On Selection :11
HIV/AIDS
Antimicrobial Resistance
Child Health
Global Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,012
6,787
0.616
* Total Citation Counts Rankings
Ranking Based On Selection :12
Microbiology
water
nanotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,404
3,184
0.306
* Total Citation Counts Rankings
Ranking Based On Selection :13
Antimicrobial resistance
laboratory diagnosis
molecular diagnosis
molecular epidemiology
tuberculosis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,755
4,279
0.439
* Total Citation Counts Rankings
Ranking Based On Selection :14
Tuberculosis
Diagnostics
Transmission Dynamics
Drug resistance
Microbiome
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,423
6,002
0.637
* Total Citation Counts Rankings
Ranking Based On Selection :15
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,586
6,236
0.822
* Total Citation Counts Rankings
Ranking Based On Selection :16
Environmental biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,651
4,860
0.731
* Total Citation Counts Rankings
Ranking Based On Selection :17
wine microbiology
lactic acid bacteria
malolactic fermentation
microbial wine spoilage
biopreservation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,446
2,635
0.409
* Total Citation Counts Rankings
Ranking Based On Selection :18
Tuberculosis
Drug and Vaccine Development
Diagnostics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,963
1,718
0.288
* Total Citation Counts Rankings
Ranking Based On Selection :19
Biotechnology
Microbiology
Enzymology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,657
2,774
0.490
* Total Citation Counts Rankings
Ranking Based On Selection :20
Yeast Taxonomy
Signal trasnduction
Pathogenic yeasts
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,520
1,515
0.274
* Total Citation Counts Rankings
Ranking Based On Selection :21
Biotechnology
microbiology
biology
bioprocess engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,106
2,553
0.500
* Total Citation Counts Rankings
Ranking Based On Selection :22
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,744
3,614
0.762
* Total Citation Counts Rankings
Ranking Based On Selection :23
Mycobacteriology
tuberculosis
host-pathogen interaction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,511
2,009
0.445
* Total Citation Counts Rankings
Ranking Based On Selection :24
Microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,846
1,876
0.488
* Total Citation Counts Rankings
Ranking Based On Selection :25
Microbial ecology
yeasts
Mycology
soil biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,799
1,494
0.393
Anthony I Okoh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,444
18,871
0.688
Applied and Environmental Microbiology
Water Quality
Antimicrobial Resistance.
Don A Cowan
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,466
12,066
0.474
Mark Patrick Nicol
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,040
14,000
0.559
microbiology
pneumonia
tuberculosis
microbiome
diagnostics
Willem Heber (Emile) Van Zyl
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,477
6,337
0.309
Leon MT Dicks
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,313
7,972
0.413
Microbiology
lactic acid bacteria
antimicrobial peptides
bacteriocins
probiotics
Helen Cox
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,090
5,739
0.380
Bernard Prior
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,458
2,822
0.210
yeast & fungal bioolgy and biotechnology
Angela Dramowski
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,979
12,397
0.955
Neonatal sepsis
Bloodstream infection
Antimicrobial resistance & stewardship
Healthcare-associated infection
Infection preve
Lise Korsten
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,947
5,701
0.477
Fresh Produce Safety and Quality
Ruth Hall
University of the Western Cape
Bellville, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,417
5,703
0.500
land reform
agriculture
farm workers
land grabbing
redistribution
Pascal O. Bessong, Massaf
University of Venda
Thohoyandou, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,012
6,787
0.616
HIV/AIDS
Antimicrobial Resistance
Child Health
Global Health
TE Cloete
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,404
3,184
0.306
Microbiology
water
nanotechnology
Andrew Whitelaw
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,755
4,279
0.439
Antimicrobial resistance
laboratory diagnosis
molecular diagnosis
molecular epidemiology
tuberculosis
Grant Theron
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,423
6,002
0.637
Tuberculosis
Diagnostics
Transmission Dynamics
Drug resistance
Microbiome
Gert Van Zyl
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,586
6,236
0.822
Ademola Olufolahan Olaniran
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,651
4,860
0.731
Environmental biotechnology
Maret Du Toit
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,446
2,635
0.409
wine microbiology
lactic acid bacteria
malolactic fermentation
microbial wine spoilage
biopreservation
PB Fourie
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,963
1,718
0.288
Tuberculosis
Drug and Vaccine Development
Diagnostics
Johnson Lin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,657
2,774
0.490
Biotechnology
Microbiology
Enzymology
Jacobus Albertyn
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,520
1,515
0.274
Yeast Taxonomy
Signal trasnduction
Pathogenic yeasts
Kris A. Willems
Belgium Campus Itversity
Akasia, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,106
2,553
0.500
Biotechnology
microbiology
biology
bioprocess engineering
Uchechukwu Nwodo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,744
3,614
0.762
Samantha Sampson
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,511
2,009
0.445
Mycobacteriology
tuberculosis
host-pathogen interaction
Karin Jacobs
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,846
1,876
0.488
Alfred Botha
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,799
1,494
0.393
Microbial ecology
yeasts
Mycology
soil biology