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
Statistics
Epidemiology
Public Health
GIS
Literature
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,486
13,349
0.568
* Total Citation Counts Rankings
Ranking Based On Selection :2
Social change in post conflict countries
social response to zoonotic diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,241
3,841
0.211
* Total Citation Counts Rankings
Ranking Based On Selection :3
Neglected Tropical Diseases
Entomology
Health Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,427
4,953
0.369
* Total Citation Counts Rankings
Ranking Based On Selection :4
land cover
pollution
Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,815
1,471
0.306
* Total Citation Counts Rankings
Ranking Based On Selection :5
Tropical Medicine
Epidemiology
Infectious diseases
surveillance
mhealth
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,079
3,267
0.801
* Total Citation Counts Rankings
Ranking Based On Selection :6
Health policy and practice
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,445
2,131
0.872
* Total Citation Counts Rankings
Ranking Based On Selection :7
Data Science
Data Analytics
AI
Social Justice
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,767
873
0.494
* Total Citation Counts Rankings
Ranking Based On Selection :8
Economic Policy Management
Macroeconomic Forecasting
Informal Livelihood
AI Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,734
1,129
0.651
* Total Citation Counts Rankings
Ranking Based On Selection :9
Infectious Diseases
Public Health and Internal Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,736
1,707
0.983
* Total Citation Counts Rankings
Ranking Based On Selection :10
Cardiology
Internal Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,707
1,146
0.671
* Total Citation Counts Rankings
Ranking Based On Selection :11
Agricultural Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,673
995
0.595
* Total Citation Counts Rankings
Ranking Based On Selection :12
Renewable energy technologies
greenhouse gas mitigation
solid waste management and utilization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,527
476
0.312
* Total Citation Counts Rankings
Ranking Based On Selection :13
Renewable energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,123
410
0.365
* Total Citation Counts Rankings
Ranking Based On Selection :14
Pathology
Medicine
Physiology
Hepatogastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,090
918
0.842
* Total Citation Counts Rankings
Ranking Based On Selection :15
Epidemiology of Infectious Diseases
Virology
Immunology
Bacteriology
Biochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,007
797
0.791
* Total Citation Counts Rankings
Ranking Based On Selection :16
Cereal Crops Research. plant stress
soil remediation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
852
775
0.910
* Total Citation Counts Rankings
Ranking Based On Selection :17
Sacred Groves
Podostemaceae
Tropical Plants
Ecological Surveillance of Viral Pathogens
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
857
483
0.564
* Total Citation Counts Rankings
Ranking Based On Selection :18
Argriculture
Plant Physiology
Biological Nitrogen Fixation
Water Quality Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
791
664
0.839
* Total Citation Counts Rankings
Ranking Based On Selection :19
Medicinal plant research
Veterinary Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
785
481
0.613
* Total Citation Counts Rankings
Ranking Based On Selection :20
Blue Economic diversification in the era of Climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
771
519
0.673
* Total Citation Counts Rankings
Ranking Based On Selection :21
heavy metals
wastewater
grey water
solid waste management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
529
266
0.503
* Total Citation Counts Rankings
Ranking Based On Selection :22
Institutional and Educational Research
Environmental Management
Taxonomy and Biosystematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
560
534
0.954
* Total Citation Counts Rankings
Ranking Based On Selection :23
Physical Activity & Public Health
Public Health Nutrition
Health Education Promotion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
506
339
0.670
* Total Citation Counts Rankings
Ranking Based On Selection :24
developmental issues
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
510
440
0.863
* Total Citation Counts Rankings
Ranking Based On Selection :25
Environmental Science and Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
501
326
0.651
Osman Sankoh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,486
13,349
0.568
Statistics
Epidemiology
Public Health
GIS
Literature
Paul Richards
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,241
3,841
0.211
Social change in post conflict countries
social response to zoonotic diseases
Bockarie M
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,427
4,953
0.369
Richard Wadsworth
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,815
1,471
0.306
land cover
pollution
Sierra Leone
Rashid Ansumana
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,079
3,267
0.801
Tropical Medicine
Epidemiology
Infectious diseases
surveillance
mhealth
Haja Ramatulai Wurie
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,445
2,131
0.872
Health policy and practice
Ibrahim Denis Fofanah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,767
873
0.494
Data Science
Data Analytics
AI
Social Justice
Emerson Abraham Jackson|Emerson A. Jackson, E.A. Jackson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,734
1,129
0.651
Economic Policy Management
Macroeconomic Forecasting
Informal Livelihood
AI Technology
Sulaiman Lakoh
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,736
1,707
0.983
Infectious Diseases
Public Health and Internal Medicine
James Baligeh Walter Russell
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,707
1,146
0.671
Juana P. Moiwo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,673
995
0.595
Agricultural Engineering
Kelleh Gbawuru Mansaray
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,527
476
0.312
Renewable energy technologies
greenhouse gas mitigation
solid waste management and utilization
Hindowa Lebbie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,123
410
0.365
Babatunde Duduyemi
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,090
918
0.842
Pathology
Medicine
Physiology
Hepatogastroenterology
Raoul Emeric Guetiya Wadoum
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,007
797
0.791
Epidemiology of Infectious Diseases
Virology
Immunology
Bacteriology
Biochemistry
Adam S Kanu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
852
775
0.910
Cereal Crops Research. plant stress
soil remediation
Aiah Lebbie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
857
483
0.564
Sacred Groves
Podostemaceae
Tropical Plants
Ecological Surveillance of Viral Pathogens
Sheku Alfred Kanu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
791
664
0.839
Argriculture
Plant Physiology
Biological Nitrogen Fixation
Water Quality Management
Victor. P. Bagla
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
785
481
0.613
Medicinal plant research
Veterinary Science
Mathew Didlyn Kpundeh|Kpundeh Mathew Didlyn, Kpundeh M.D, Mathew D. Kpundeh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
771
519
0.673
Blue Economic diversification in the era of Climate change
Ronnie Frazer-Williams
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
529
266
0.503
Adepoju Adeyinka Olufemi|Adeyinka O. ADEPOJU, Adeyinka ADEPOJU, ADEPOJU, Adeyinka Olufemi
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
560
534
0.954
Institutional and Educational Research
Environmental Management
Taxonomy and Biosystematics
Samuel Joseph Bebeley
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
506
339
0.670
Physical Activity & Public Health
Public Health Nutrition
Health Education Promotion
Alhaji Morlai Bangura
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
510
440
0.863
Edward Hinga Sandy
University of Sierra Leone
Tower Hill, Sierra Leone
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
501
326
0.651
Environmental Science and Engineering