Citation Rankings
Highly Cited Researchers

Medical and Health Sciences / Microbiology Highly Cited Researchers 33 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
South Africa
Willem Heber (Emile) Van Zyl
Yeast Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,785
5,510
0.265
* Total Citation Counts Rankings
Ranking Based On Selection: 2
South Africa
Leon MT Dicks
Microbiology
lactic acid bacteria
antimicrobial peptides
bacteriocins
probiotics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,010
7,484
0.374
* Total Citation Counts Rankings
Ranking Based On Selection: 3
South Africa
Angela Dramowski
Neonatal sepsis
Bloodstream infection
Antimicrobial resistance & stewardship
Healthcare-associated infection
Infection preve
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,485
14,604
0.943
* Total Citation Counts Rankings
Ranking Based On Selection: 4
South Africa
Bernard Prior
yeast & fungal bioolgy and biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,629
2,448
0.180
* Total Citation Counts Rankings
Ranking Based On Selection: 5
South Africa
TE Cloete
Microbiology
water
nanotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,522
2,737
0.260
* Total Citation Counts Rankings
Ranking Based On Selection: 6
South Africa
Andrew Whitelaw
Antimicrobial resistance
laboratory diagnosis
molecular diagnosis
molecular epidemiology
tuberculosis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,130
3,956
0.391
* Total Citation Counts Rankings
Ranking Based On Selection: 7
South Africa
Grant Theron
Tuberculosis
Diagnostics
Transmission Dynamics
Drug resistance
Microbiome
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,910
5,560
0.561
* Total Citation Counts Rankings
Ranking Based On Selection: 9
South Africa
Maret Du Toit
wine microbiology
lactic acid bacteria
malolactic fermentation
microbial wine spoilage
biopreservation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,588
2,247
0.341

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* Total Citation Counts Rankings
Ranking Based On Selection: 10
South Africa
Samantha Sampson
Mycobacteriology
tuberculosis
host-pathogen interaction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,622
1,863
0.403
* Total Citation Counts Rankings
Ranking Based On Selection: 11
South Africa
Karin Jacobs
Microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,002
1,816
0.454
* Total Citation Counts Rankings
Ranking Based On Selection: 12
South Africa
Alfred Botha
Microbial ecology
yeasts
Mycology
soil biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,883
1,371
0.353
* Total Citation Counts Rankings
Ranking Based On Selection: 13
South Africa
Marinda Viljoen-Bloom
Microbiology
Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,264
1,256
0.385
* Total Citation Counts Rankings
Ranking Based On Selection: 14
South Africa
Wesaal Khan
Microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,111
2,226
0.716
* Total Citation Counts Rankings
Ranking Based On Selection: 15
South Africa
Mathabatha Evodia Setati
microbial ecology
microbial diversity
wine fermentation
non-saccharomyces yeasts
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,363
1,503
0.636
* Total Citation Counts Rankings
Ranking Based On Selection: 16
South Africa
Marelize Botes
Microbiology and water research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,968
829
0.421
* Total Citation Counts Rankings
Ranking Based On Selection: 17
South Africa
Shelly Deane
microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,783
747
0.419
* Total Citation Counts Rankings
Ranking Based On Selection: 18
South Africa
Sven Olaf Friedrich
Microbiology
Tuberculosis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,648
620
0.376
* Total Citation Counts Rankings
Ranking Based On Selection: 19
South Africa
Heinrich Volschenk
microbiology
yeast biotechnology
protein engineering
proteomics
bioinformatics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,596
560
0.351
* Total Citation Counts Rankings
Ranking Based On Selection: 20
South Africa
Karen Jacqueline Cloete
Microbiology
Psychiatry
Ion beam analysis
Synchrotron radiation
Nanotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
906
573
0.632
* Total Citation Counts Rankings
Ranking Based On Selection: 21
South Africa
Deon Neveling
Microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
605
443
0.732
* Total Citation Counts Rankings
Ranking Based On Selection: 22
South Africa
Byron Reeve
Microbiology
Biotechnology
Molecular Biology
Mycobacerium Tuberculosis
Diagnostics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
540
529
0.980
* Total Citation Counts Rankings
Ranking Based On Selection: 23
South Africa
Peter Kotsoana Montso
Microbiology
Antibiotic Resistance
Phages
Phage-Host interaction
Microbiome
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
430
417
0.970
* Total Citation Counts Rankings
Ranking Based On Selection: 24
South Africa
Trudy Jansen
Stress tolerance in yeasts
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
237
220
0.928
* Total Citation Counts Rankings
Ranking Based On Selection: 25
South Africa
Anna O. Okunola
Tuberculosis
Diagnostics
Clinical Trial
Clinical Research
Milk Microbiome
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
242
227
0.938
* Total Citation Counts Rankings
Rankings
39,363
South Africa
122
19
Ranking Based On Selection: 1
Willem Heber (Emile) Van Zyl
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,785
5,510
0.265
* Total Citation Counts Rankings
Rankings
41,822
South Africa
132
21
Ranking Based On Selection: 2
Leon MT Dicks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,010
7,484
0.374
Microbiology
lactic acid bacteria
antimicrobial peptides
bacteriocins
probiotics
* Total Citation Counts Rankings
Rankings
63,136
South Africa
217
34
Ranking Based On Selection: 3
Angela Dramowski
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,485
14,604
0.943
Neonatal sepsis
Bloodstream infection
Antimicrobial resistance & stewardship
Healthcare-associated infection
Infection preve
* Total Citation Counts Rankings
Rankings
69,383
South Africa
236
37
Ranking Based On Selection: 4
Bernard Prior
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,629
2,448
0.180
* Total Citation Counts Rankings
Rankings
94,552
South Africa
330
48
Ranking Based On Selection: 5
TE Cloete
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,522
2,737
0.260
* Total Citation Counts Rankings
Rankings
99,950
South Africa
355
54
Ranking Based On Selection: 6
Andrew Whitelaw
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,130
3,956
0.391
Antimicrobial resistance
laboratory diagnosis
molecular diagnosis
molecular epidemiology
tuberculosis
* Total Citation Counts Rankings
Rankings
103,002
South Africa
367
57
Ranking Based On Selection: 7
Grant Theron
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,910
5,560
0.561
Tuberculosis
Diagnostics
Transmission Dynamics
Drug resistance
Microbiome
* Total Citation Counts Rankings
Rankings
132,653
South Africa
519
76
Ranking Based On Selection: 8
Gert Van Zyl
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,869
6,209
0.789
* Total Citation Counts Rankings
Rankings
158,744
South Africa
621
89
Ranking Based On Selection: 9
Maret Du Toit
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,588
2,247
0.341
wine microbiology
lactic acid bacteria
malolactic fermentation
microbial wine spoilage
biopreservation
* Total Citation Counts Rankings
Rankings
225,756
South Africa
949
119
Ranking Based On Selection: 10
Samantha Sampson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,622
1,863
0.403
Mycobacteriology
tuberculosis
host-pathogen interaction

360° Institutional Performance & Benchmarking Click Here for Live Demo 

Through advanced, institution-specific analytics and benchmarking, gain data-driven strategic insights into your academic performance, global standing, and competitive strengths. Compare your institution with 20 similarly ranked institutions at city, country, regional, and global levels, as well as with those in similar standings across 13 subjects, to uncover your institution’s strengths. More Info

* Total Citation Counts Rankings
Rankings
257,831
South Africa
1,102
139
Ranking Based On Selection: 11
Karin Jacobs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,002
1,816
0.454
* Total Citation Counts Rankings
Rankings
264,802
South Africa
1,131
145
Ranking Based On Selection: 12
Alfred Botha
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,883
1,371
0.353
* Total Citation Counts Rankings
Rankings
307,172
South Africa
1,355
177
Ranking Based On Selection: 13
Marinda Viljoen-Bloom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,264
1,256
0.385
* Total Citation Counts Rankings
Rankings
327,632
South Africa
1,467
185
Ranking Based On Selection: 14
Wesaal Khan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,111
2,226
0.716
* Total Citation Counts Rankings
Rankings
403,584
South Africa
1,883
247
Ranking Based On Selection: 15
Mathabatha Evodia Setati
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,363
1,503
0.636
microbial ecology
microbial diversity
wine fermentation
non-saccharomyces yeasts
* Total Citation Counts Rankings
Rankings
454,594
South Africa
2,160
274
Ranking Based On Selection: 16
Marelize Botes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,968
829
0.421
* Total Citation Counts Rankings
Rankings
487,219
South Africa
2,322
297
Ranking Based On Selection: 17
Shelly Deane
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,783
747
0.419
* Total Citation Counts Rankings
Rankings
513,747
South Africa
2,493
308
Ranking Based On Selection: 18
Sven Olaf Friedrich
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,648
620
0.376
* Total Citation Counts Rankings
Rankings
522,206
South Africa
2,542
317
Ranking Based On Selection: 19
Heinrich Volschenk
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,596
560
0.351
microbiology
yeast biotechnology
protein engineering
proteomics
bioinformatics
* Total Citation Counts Rankings
Rankings
740,150
South Africa
3,809
452
Ranking Based On Selection: 20
Karen Jacqueline Cloete
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
906
573
0.632
Microbiology
Psychiatry
Ion beam analysis
Synchrotron radiation
Nanotechnology
* Total Citation Counts Rankings
Rankings
869,113
South Africa
4,639
543
Ranking Based On Selection: 21
Deon Neveling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
605
443
0.732
* Total Citation Counts Rankings
Rankings
905,050
South Africa
4,874
572
Ranking Based On Selection: 22
Byron Reeve
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
540
529
0.980
Microbiology
Biotechnology
Molecular Biology
Mycobacerium Tuberculosis
Diagnostics
* Total Citation Counts Rankings
Rankings
1,008,669
South Africa
5,699
659
Ranking Based On Selection: 23
Peter Kotsoana Montso
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
430
417
0.970
Microbiology
Antibiotic Resistance
Phages
Phage-Host interaction
Microbiome
* Total Citation Counts Rankings
Rankings
1,249,540
South Africa
7,801
834
Ranking Based On Selection: 24
Trudy Jansen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
237
220
0.928
* Total Citation Counts Rankings
Rankings
1,251,362
South Africa
7,818
837
Ranking Based On Selection: 25
Anna O. Okunola
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
242
227
0.938
Tuberculosis
Diagnostics
Clinical Trial
Clinical Research
Milk Microbiome
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