Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Art, Design and Architecture, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
* Total Citation Counts Rankings
World Rank
251,778
Country Rank
5
Institution Rank : 4
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Rashid Ansumana](https://cdn.adscientificindex.com/pictures/f5/89265.jpg)
Tropical Medicine
Epidemiology
Infectious diseases
surveillance
mhealth
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,915
3,112
0.795
* Total Citation Counts Rankings
World Rank
390,597
Country Rank
6
Institution Rank : 1
![](https://cdn.adscientificindex.com/logos/11375.jpg)
![Sierra Leone](/flags/sl.png)
![Haja Ramatulai Wurie](https://cdn.adscientificindex.com/pictures/c3/4308865.jpg)
Health policy and practice
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,295
1,984
0.864
* Total Citation Counts Rankings
World Rank
490,307
Country Rank
8
Institution Rank : 2
![](https://cdn.adscientificindex.com/logos/11375.jpg)
![Sierra Leone](/flags/sl.png)
![James Baligeh Walter Russell](https://cdn.adscientificindex.com/pictures/19/4986741.jpg)
Cardiology
Internal Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,669
1,111
0.666
* Total Citation Counts Rankings
World Rank
500,935
Country Rank
11
Institution Rank : 3
![](https://cdn.adscientificindex.com/logos/11375.jpg)
![Sierra Leone](/flags/sl.png)
![Sulaiman Lakoh](https://cdn.adscientificindex.com/pictures/79/4308970.jpg)
Infectious Diseases
Public Health and Internal Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,617
1,588
0.982
* Total Citation Counts Rankings
World Rank
670,092
Country Rank
14
Institution Rank : 5
![](https://cdn.adscientificindex.com/logos/11375.jpg)
![Sierra Leone](/flags/sl.png)
![Babatunde Duduyemi](https://cdn.adscientificindex.com/pictures/0d/4308825.jpg)
Pathology
Medicine
Physiology
Hepatogastroenterology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
997
832
0.835
* Total Citation Counts Rankings
World Rank
675,463
Country Rank
15
Institution Rank : 1
![](https://cdn.adscientificindex.com/logos/2336.jpg)
![Sierra Leone](/flags/sl.png)
![Raoul Emeric Guetiya Wadoum](https://cdn.adscientificindex.com/pictures/01/4991022.jpg)
Epidemiology of Infectious Diseases
Virology
Immunology
Bacteriology
Biochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
982
774
0.788
* Total Citation Counts Rankings
World Rank
761,913
Country Rank
18
Institution Rank : 9
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Victor. P. Bagla](/user/assets/images/profile/no-profile-photo.png)
Medicinal plant research
Veterinary Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
772
468
0.606
* Total Citation Counts Rankings
World Rank
902,653
Country Rank
22
Institution Rank : 12
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Samuel Joseph Bebeley](https://cdn.adscientificindex.com/pictures/2a/4360523.jpg)
Physical Activity & Public Health
Public Health Nutrition
Health Education Promotion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
502
335
0.667
* Total Citation Counts Rankings
World Rank
1,114,350
Country Rank
34
Institution Rank : 18
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Lawrence Sao Babawo](https://cdn.adscientificindex.com/pictures/b9/4986726.jpg)
Control of Infectious Diseases
Health Systems & Health Policy
Pandemic/Epidemic Outbreaks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
240
240
1.000
* Total Citation Counts Rankings
World Rank
1,133,102
Country Rank
37
Institution Rank : 11
![](https://cdn.adscientificindex.com/logos/11375.jpg)
![Sierra Leone](/flags/sl.png)
![Onome Abiri](https://cdn.adscientificindex.com/pictures/3d/4986743.jpg)
Clinical Trials
Pharmacy
Pharmacology
Pharmacoepidemiology
Pharmacovigilance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
226
215
0.951
* Total Citation Counts Rankings
World Rank
1,135,099
Country Rank
38
Institution Rank : 12
![](https://cdn.adscientificindex.com/logos/11375.jpg)
![Sierra Leone](/flags/sl.png)
![Alhaji Alusine Jalloh](/pictures/41/4308804.jpg)
Paediatrics and Paeditric Neurology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
225
134
0.596
* Total Citation Counts Rankings
World Rank
1,279,582
Country Rank
46
Institution Rank : 21
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Augustus Osborne](https://cdn.adscientificindex.com/pictures/12/4488173.jpg)
Child and Adolescent Health
Maternal and Child Health
Public Health
Women's Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
144
143
0.993
* Total Citation Counts Rankings
World Rank
1,306,737
Country Rank
50
Institution Rank : 23
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Camilla Bangura](/pictures/7a/4986729.jpg)
Adolescents Health
Women's Health
Public Health
Data Analysis
Global Health Surveys.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
133
132
0.992
* Total Citation Counts Rankings
World Rank
1,373,349
Country Rank
54
Institution Rank : 27
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Samuel Maxwell Tom Williams](/pictures/d1/4986732.jpg)
Public Health
Zoonotic Diseases and Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
109
109
1.000
* Total Citation Counts Rankings
World Rank
1,399,498
Country Rank
58
Institution Rank : 28
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Michael Conteh](https://cdn.adscientificindex.com/pictures/3f/4986731.jpg)
Physical Activity & Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
101
93
0.921
* Total Citation Counts Rankings
World Rank
1,868,083
Country Rank
88
Institution Rank : 45
![](https://cdn.adscientificindex.com/logos/6383.jpg)
![Sierra Leone](/flags/sl.png)
![Esther Marie Williams](/pictures/c5/4732395.jpg)
veterinary diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20
20
1.000
* Total Citation Counts Rankings
World Rank
2,001,469
Country Rank
95
Institution Rank : 4
![](https://cdn.adscientificindex.com/logos/11159.png)
![Sierra Leone](/flags/sl.png)
![Abraham Isiaka Jimmy](/pictures/5b/4308785.jpg)
Abraham Isiaka Jimmy is mostly in Public Health related research and and mental health research activities
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
251,778
![Sierra Leone](/flags/sl.png)
5
![](https://cdn.adscientificindex.com/logos/6383.jpg)
4
Rashid Ansumana
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,915
3,112
0.795
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Tropical Medicine
Epidemiology
Infectious diseases
surveillance
mhealth
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
390,597
![Sierra Leone](/flags/sl.png)
6
![](https://cdn.adscientificindex.com/logos/11375.jpg)
1
Haja Ramatulai Wurie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,295
1,984
0.864
![](https://cdn.adscientificindex.com/logos/11375.jpg)
Health policy and practice
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
490,307
![Sierra Leone](/flags/sl.png)
8
![](https://cdn.adscientificindex.com/logos/11375.jpg)
2
James Baligeh Walter Russell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,669
1,111
0.666
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
500,935
![Sierra Leone](/flags/sl.png)
11
![](https://cdn.adscientificindex.com/logos/11375.jpg)
3
Sulaiman Lakoh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,617
1,588
0.982
![](https://cdn.adscientificindex.com/logos/11375.jpg)
Infectious Diseases
Public Health and Internal Medicine
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
670,092
![Sierra Leone](/flags/sl.png)
14
![](https://cdn.adscientificindex.com/logos/11375.jpg)
5
Babatunde Duduyemi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
997
832
0.835
![](https://cdn.adscientificindex.com/logos/11375.jpg)
Pathology
Medicine
Physiology
Hepatogastroenterology
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
675,463
![Sierra Leone](/flags/sl.png)
15
![](https://cdn.adscientificindex.com/logos/2336.jpg)
1
Raoul Emeric Guetiya Wadoum
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
982
774
0.788
![](https://cdn.adscientificindex.com/logos/2336.jpg)
Epidemiology of Infectious Diseases
Virology
Immunology
Bacteriology
Biochemistry
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
761,913
![Sierra Leone](/flags/sl.png)
18
![](https://cdn.adscientificindex.com/logos/6383.jpg)
9
Victor. P. Bagla
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
772
468
0.606
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Medicinal plant research
Veterinary Science
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
902,653
![Sierra Leone](/flags/sl.png)
22
![](https://cdn.adscientificindex.com/logos/6383.jpg)
12
Samuel Joseph Bebeley
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
502
335
0.667
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Physical Activity & Public Health
Public Health Nutrition
Health Education Promotion
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,114,350
![Sierra Leone](/flags/sl.png)
34
![](https://cdn.adscientificindex.com/logos/6383.jpg)
18
Lawrence Sao Babawo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
240
240
1.000
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Control of Infectious Diseases
Health Systems & Health Policy
Pandemic/Epidemic Outbreaks
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,133,102
![Sierra Leone](/flags/sl.png)
37
![](https://cdn.adscientificindex.com/logos/11375.jpg)
11
Onome Abiri
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
226
215
0.951
![](https://cdn.adscientificindex.com/logos/11375.jpg)
Clinical Trials
Pharmacy
Pharmacology
Pharmacoepidemiology
Pharmacovigilance
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* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,135,099
![Sierra Leone](/flags/sl.png)
38
![](https://cdn.adscientificindex.com/logos/11375.jpg)
12
Alhaji Alusine Jalloh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
225
134
0.596
![](https://cdn.adscientificindex.com/logos/11375.jpg)
Paediatrics and Paeditric Neurology
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,279,582
![Sierra Leone](/flags/sl.png)
46
![](https://cdn.adscientificindex.com/logos/6383.jpg)
21
Augustus Osborne
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
144
143
0.993
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Child and Adolescent Health
Maternal and Child Health
Public Health
Women's Health
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,306,737
![Sierra Leone](/flags/sl.png)
50
![](https://cdn.adscientificindex.com/logos/6383.jpg)
23
Camilla Bangura
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
133
132
0.992
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Adolescents Health
Women's Health
Public Health
Data Analysis
Global Health Surveys.
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,373,349
![Sierra Leone](/flags/sl.png)
54
![](https://cdn.adscientificindex.com/logos/6383.jpg)
27
Samuel Maxwell Tom Williams
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
109
109
1.000
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Public Health
Zoonotic Diseases and Epidemiology
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,399,498
![Sierra Leone](/flags/sl.png)
58
![](https://cdn.adscientificindex.com/logos/6383.jpg)
28
Michael Conteh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
101
93
0.921
![](https://cdn.adscientificindex.com/logos/6383.jpg)
Physical Activity & Public Health
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,868,083
![Sierra Leone](/flags/sl.png)
88
![](https://cdn.adscientificindex.com/logos/6383.jpg)
45
Esther Marie Williams
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20
20
1.000
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
2,001,469
![Sierra Leone](/flags/sl.png)
95
![](https://cdn.adscientificindex.com/logos/11159.png)
4
Abraham Isiaka Jimmy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
![](https://cdn.adscientificindex.com/logos/11159.png)
Abraham Isiaka Jimmy is mostly in Public Health related research and and mental health research activities