Science Explorer Back to mapMap
Discussion
Country

Science in Chad

Chad ranks #168 of 189 countries on research quality in 2022-now (#171 all time), with 545 research works and 4.2% of them in the world's top 10%.

World rank, 2022-now
#168
of 189 · #171 all time
Works, 2022-now
545
▲ 104% vs 2018-21
Citations
7.8k
4.6 per fractional work, all time
Top-10% rate
4.2%
all institutions 10.0%
vs its own fields
0.75×
1.00× is exactly expected
In the world top 100
0
0 in the top 1,000
Open access
79%
world 40%
International
47%
world 18%
Chad

Which fields of science does Chad work in?

In 2022-now, 30% of research in Chad is in Health Sciences, 29% in Physical Sciences. Its largest fields are Medicine (25%), Agricultural and Biological Sciences (19%), Social Sciences (9%). It does 1.8× the world's share of Life Sciences.

Health Sciences: 200 fractional works · 29.8% of its workMedicine: 169 fractional works · 25.2% of its workEpidemiology: 28 fractional works · 4.2% of its workPublic Health, Environmental and Occupational Health: 18 fractional works · 2.7% of its workInfectious Diseases: 18 fractional works · 2.6% of its workSurgery: 16 fractional works · 2.4% of its workPediatrics, Perinatology and Child Health: 12 fractional works · 1.7% of its workEndocrinology, Diabetes and Metabolism: 7 fractional works · 1.1% of its workHepatology: 6 fractional works · 0.8% of its workNephrology: 6 fractional works · 0.8% of its workOphthalmology: 6 fractional works · 0.8% of its workRadiology, Nuclear Medicine and Imaging: 5 fractional works · 0.7% of its workPulmonary and Respiratory Medicine: 4 fractional works · 0.6% of its workRheumatology: 4 fractional works · 0.6% of its workEmergency Medicine: 4 fractional works · 0.6% of its workCardiology and Cardiovascular Medicine: 4 fractional works · 0.6% of its workObstetrics and Gynecology: 3 fractional works · 0.5% of its workBiochemistry: 3 fractional works · 0.5% of its workPathology and Forensic Medicine: 3 fractional works · 0.4% of its workOncology: 2 fractional works · 0.3% of its workPhysiology: 2 fractional works · 0.3% of its workPharmacology: 2 fractional works · 0.3% of its workComplementary and alternative medicine: 2 fractional works · 0.3% of its workOtorhinolaryngology: 2 fractional works · 0.3% of its workNeurology: 2 fractional works · 0.3% of its workPsychiatry and Mental health: 2 fractional works · 0.2% of its workHematology: 2 fractional works · 0.2% of its workRehabilitation: 2 fractional works · 0.2% of its workUrology: 2 fractional works · 0.2% of its workSmaller subfields together: 5 fractional works · 0.8% of its workHealth Professions: 15 fractional works · 2.2% of its workGeneral Health Professions: 10 fractional works · 1.5% of its workHealth Information Management: 2 fractional works · 0.3% of its workSmaller subfields together: 2 fractional works · 0.4% of its workNursing: 14 fractional works · 2.1% of its workNutrition and Dietetics: 14 fractional works · 2.1% of its workVeterinary: 1 fractional works · 0.2% of its workDentistry: 1 fractional works · 0.1% of its workPhysical Sciences: 196 fractional works · 29.1% of its workEngineering: 59 fractional works · 8.8% of its workElectrical and Electronic Engineering: 12 fractional works · 1.8% of its workMechanical Engineering: 9 fractional works · 1.3% of its workBuilding and Construction: 7 fractional works · 1.1% of its workCivil and Structural Engineering: 7 fractional works · 1.1% of its workControl and Systems Engineering: 4 fractional works · 0.6% of its workAerospace Engineering: 4 fractional works · 0.6% of its workBiomedical Engineering: 4 fractional works · 0.6% of its workComputational Mechanics: 3 fractional works · 0.4% of its workMechanics of Materials: 2 fractional works · 0.3% of its workOcean Engineering: 2 fractional works · 0.3% of its workMedia Technology: 2 fractional works · 0.2% of its workSafety, Risk, Reliability and Quality: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.2% of its workEnvironmental Science: 47 fractional works · 7.0% of its workEnvironmental Engineering: 10 fractional works · 1.4% of its workManagement, Monitoring, Policy and Law: 9 fractional works · 1.3% of its workWater Science and Technology: 8 fractional works · 1.2% of its workPollution: 5 fractional works · 0.8% of its workGlobal and Planetary Change: 5 fractional works · 0.8% of its workIndustrial and Manufacturing Engineering: 4 fractional works · 0.6% of its workEcology: 4 fractional works · 0.6% of its workSmaller subfields together: 2 fractional works · 0.4% of its workComputer Science: 41 fractional works · 6.1% of its workInformation Systems: 16 fractional works · 2.3% of its workArtificial Intelligence: 8 fractional works · 1.2% of its workComputer Networks and Communications: 7 fractional works · 1.1% of its workComputer Vision and Pattern Recognition: 4 fractional works · 0.6% of its workComputational Theory and Mathematics: 2 fractional works · 0.4% of its workSignal Processing: 2 fractional works · 0.2% of its workSmaller subfields together: 2 fractional works · 0.3% of its workEarth and Planetary Sciences: 16 fractional works · 2.4% of its workGeophysics: 7 fractional works · 1.1% of its workGeochemistry and Petrology: 5 fractional works · 0.7% of its workAtmospheric Science: 2 fractional works · 0.3% of its workSmaller subfields together: 2 fractional works · 0.3% of its workMaterials Science: 9 fractional works · 1.3% of its workBiomaterials: 2 fractional works · 0.3% of its workMaterials Chemistry: 2 fractional works · 0.3% of its workPolymers and Plastics: 2 fractional works · 0.2% of its workSmaller subfields together: 3 fractional works · 0.4% of its workPhysics and Astronomy: 8 fractional works · 1.2% of its workStatistical and Nonlinear Physics: 4 fractional works · 0.5% of its workAtomic and Molecular Physics, and Optics: 3 fractional works · 0.4% of its workSmaller subfields together: 2 fractional works · 0.2% of its workMathematics: 7 fractional works · 1.1% of its workModeling and Simulation: 3 fractional works · 0.4% of its workNumerical Analysis: 2 fractional works · 0.3% of its workApplied Mathematics: 2 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.1% of its workEnergy: 6 fractional works · 0.9% of its workRenewable Energy, Sustainability and the Environment: 5 fractional works · 0.8% of its workSmaller subfields together: 1 fractional works · 0.1% of its workChemistry: 2 fractional works · 0.3% of its workChemical Engineering: 0 fractional works · 0.0% of its workLife Sciences: 163 fractional works · 24.2% of its workAgricultural and Biological Sciences: 124 fractional works · 18.5% of its workEcology, Evolution, Behavior and Systematics: 31 fractional works · 4.6% of its workPlant Science: 28 fractional works · 4.1% of its workFood Science: 25 fractional works · 3.8% of its workForestry: 12 fractional works · 1.8% of its workAnimal Science and Zoology: 8 fractional works · 1.3% of its workAgronomy and Crop Science: 8 fractional works · 1.2% of its workSoil Science: 5 fractional works · 0.8% of its workInsect Science: 3 fractional works · 0.4% of its workGeneral Agricultural and Biological Sciences: 2 fractional works · 0.3% of its workAquatic Science: 1 fractional works · 0.2% of its workBiochemistry, Genetics and Molecular Biology: 22 fractional works · 3.3% of its workMolecular Biology: 7 fractional works · 1.0% of its workGenetics: 7 fractional works · 1.0% of its workEndocrinology: 3 fractional works · 0.5% of its workMolecular Medicine: 2 fractional works · 0.3% of its workSmaller subfields together: 3 fractional works · 0.5% of its workImmunology and Microbiology: 12 fractional works · 1.7% of its workParasitology: 4 fractional works · 0.6% of its workVirology: 3 fractional works · 0.4% of its workMicrobiology: 2 fractional works · 0.3% of its workImmunology: 2 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.2% of its workPharmacology, Toxicology and Pharmaceutics: 2 fractional works · 0.4% of its workPharmacology: 2 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.0% of its workNeuroscience: 2 fractional works · 0.3% of its workSocial Sciences: 114 fractional works · 16.9% of its workSocial Sciences: 62 fractional works · 9.2% of its workSociology and Political Science: 19 fractional works · 2.9% of its workEducation: 9 fractional works · 1.3% of its workAnthropology: 7 fractional works · 1.0% of its workPolitical Science and International Relations: 6 fractional works · 1.0% of its workLinguistics and Language: 4 fractional works · 0.5% of its workSafety Research: 2 fractional works · 0.4% of its workDemography: 2 fractional works · 0.3% of its workUrban Studies: 2 fractional works · 0.3% of its workHealth: 2 fractional works · 0.3% of its workGender Studies: 2 fractional works · 0.3% of its workSmaller subfields together: 6 fractional works · 1.0% of its workEconomics, Econometrics and Finance: 21 fractional works · 3.1% of its workEconomics and Econometrics: 16 fractional works · 2.5% of its workGeneral Economics, Econometrics and Finance: 2 fractional works · 0.4% of its workFinance: 2 fractional works · 0.2% of its workArts and Humanities: 12 fractional works · 1.8% of its workLiterature and Literary Theory: 4 fractional works · 0.5% of its workLanguage and Linguistics: 4 fractional works · 0.5% of its workPhilosophy: 1 fractional works · 0.2% of its workSmaller subfields together: 4 fractional works · 0.6% of its workBusiness, Management and Accounting: 12 fractional works · 1.8% of its workStrategy and Management: 4 fractional works · 0.5% of its workManagement of Technology and Innovation: 3 fractional works · 0.4% of its workAccounting: 3 fractional works · 0.4% of its workBusiness and International Management: 2 fractional works · 0.2% of its workSmaller subfields together: 2 fractional works · 0.3% of its workPsychology: 4 fractional works · 0.5% of its workSocial Psychology: 2 fractional works · 0.2% of its workClinical Psychology: 1 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.1% of its workDecision Sciences: 3 fractional works · 0.4% of its workManagement Science and Operations Research: 2 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workALL ITS WORKChad672fractional works, 2022-now
Life Sciences24%Physical Sciences29%Health Sciences30%Social Sciences17%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this country does than the world.

Its 4 domains and 26 fields, with their numbers
    1. Medicine16925.2%
    2. Health Professions152.2%
    3. Nursing142.1%
    4. Veterinary10.2%
    5. Dentistry10.1%
    1. Engineering598.8%
    2. Environmental Science477.0%
    3. Computer Science416.1%
    4. Earth and Planetary Sciences162.4%
    5. Materials Science91.3%
    6. Physics and Astronomy81.2%
    7. Mathematics71.1%
    8. Energy60.9%
    9. Chemistry20.3%
    10. Chemical Engineering00.0%
    1. Agricultural and Biological Sciences12418.5%
    2. Biochemistry, Genetics and Molecular Biology223.3%
    3. Immunology and Microbiology121.7%
    4. Pharmacology, Toxicology and Pharmaceutics20.4%
    5. Neuroscience20.3%
    1. Social Sciences629.2%
    2. Economics, Econometrics and Finance213.1%
    3. Arts and Humanities121.8%
    4. Business, Management and Accounting121.8%
    5. Psychology40.5%
    6. Decision Sciences30.4%
All of science, and how each field's share has moved since 1950: the Science domain explorer

Which keywords describe research in Chad?

By fractional works in 2022-now, weighted toward what it does more of than the world: Smallholder Farmers, Epidemiology, Adaptation, Climate Change, Diversity, Livestock Farming, Agroecology and Agricultural Development.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this country's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Epidemiology62▲ 2.3×83 topics
  2. Climate Change50▲ 2.8×47 topics
  3. Sustainability43▲ 2.6×36 topics
  4. Smallholder Farmers39▲ 28×6 topics
  5. Adaptation31▲ 16×5 topics
  6. Diversity26▲ 22×4 topics
  7. Livestock Farming26▲ 65×2 topics
  8. Agroecology26▲ 27×2 topics
  9. Agricultural Development25▲ 25×2 topics
  10. Multifunctionality25▲ 81×1 topic
  11. Work Organization25▲ 97×1 topic
  12. Renewable Energy20▲ 2.0×22 topics
  13. Immune Response19▲ 5.0×13 topics
  14. Public Health19▲ 1.92×34 topics
  15. Treatment19▲ 2.3×27 topics
  16. Genetic Diversity19▲ 6.4×15 topics
  17. Sustainable Agriculture18▲ 8.5×9 topics
  18. Remote Sensing17▲ 2.1×15 topics
  19. Antioxidant16▲ 3.5×26 topics
  20. Nutritional Value15▲ 20×2 topics
  21. Climate Resilience15▲ 38×3 topics
  22. Diabetes15▲ 4.4×11 topics
  23. Global Burden15▲ 4.1×12 topics
  24. Biodiversity Conservation14▲ 5.4×8 topics
  25. Governance13▲ 5.9×7 topics
  26. Agroforestry12▲ 27×4 topics
  27. Health Benefits12▲ 5.3×10 topics
  28. Indigenous Fruits12▲ 77×1 topic
  29. Tree Domestication12▲ 77×1 topic
  30. Vaccine12▲ 4.3×9 topics
  31. Global Burden of Disease10▲ 6.3×2 topics
  32. Maternal Mortality10▲ 6.9×5 topics
  33. Maternal and Child Undernutrition10▲ 19×1 topic
  34. Water Sanitation Hygiene10▲ 19×1 topic
  35. GIS10▲ 19×3 topics
  36. Antiviral Therapy9▲ 14×3 topics
  37. Antiretroviral Therapy9▲ 7.9×6 topics
  38. Community Health Workers9▲ 14×2 topics
  39. Institutional Quality9▲ 12×2 topics
  40. Liver Disease8▲ 14×2 topics

Which research topics does Chad publish the most in?

Its largest topics in 2022-now are Agriculture and Rural Development Research, African Botany and Ecology Studies, Child Nutrition and Water Access.

Agriculture and Rural De…25Agriculture and Rural Development Research: 25 fractional worksAfrican Botany and Ecology Studies: 12 fractional worksChild Nutrition and Water Access: 10 fractional worksAnimal Diversity and Health Studies: 8 fractional worksEconomic Growth and Development: 8 fractional worksGlobal Maternal and Child Health: 7 fractional worksGroundwater and Watershe…7Groundwater and Watershed Analysis: 7 fractional worksRangeland Management and Livestock Ecology: 5 fractional worksHepatitis B Virus Studies: 5 fractional worksLivestock and Poultry Management: 4 fractional worksAfrican Studies and Ethnography: 4 fractional worksGroundwater and Isotope Geochemistry: 4 fractional works
Ecology, Evolution, Behavior and SystematicsForestryNutrition and DieteticsFood Science8 others

Area is fractional works in 2022-now; colour is the subfield each topic belongs to. Every tile is a topic page.

  1. 1 Agriculture and Rural Development Research Ecology, Evolution, Behavior and Systematics 25 works
  2. 2 African Botany and Ecology Studies Forestry 12 works
  3. 3 Child Nutrition and Water Access Nutrition and Dietetics 10 works
  4. 4 Animal Diversity and Health Studies Food Science 8 works
  5. 5 Economic Growth and Development Information Systems 8 works
  6. 6 Global Maternal and Child Health Pediatrics, Perinatology and Child Health 7 works
  7. 7 Groundwater and Watershed Analysis Environmental Engineering 7 works
  8. 8 Rangeland Management and Livestock Ecology Management, Monitoring, Policy and Law 5 works
  9. 9 Hepatitis B Virus Studies Epidemiology 5 works
  10. 10 Livestock and Poultry Management Animal Science and Zoology 4 works
  11. 11 African Studies and Ethnography Sociology and Political Science 4 works
  12. 12 Groundwater and Isotope Geochemistry Geochemistry and Petrology 4 works

Which universities in Chad lead research?

University of N'Djamena rank highest in Chad on research quality in 2022-now.

  1. 1University of N'DjamenaUniversity · N'Djamena · #8,496 worldwide3.4% top 10% · 365 works

The track on each row is its top-10% rate; the tick is the average of all institutions, 10.0% (how it is set): teal above it, red below.

All ranked institutions in Chad

Who are the top researchers in Chad?

Andossa Likius, Jean‐Claude Mousseuknadji Kouladoum and Hassane Taïsso Mackaye rank highest among researchers based in Chad.

  1. 1 Andossa Likius #853,994 worldwide 4.6k citations · 80 works
  2. 2 Jean‐Claude Mousseuknadji Kouladoum #1,017,261 worldwide 387 citations · 27 works
  3. 3 Hassane Taïsso Mackaye #1,057,251 worldwide 3.5k citations · 61 works
  4. 4 Yodé Miangotar #1,646,455 worldwide 1.9k citations · 18 works
  5. 5 Hassan Taïsso Mackaye #1,834,244 worldwide 1.1k citations · 22 works
  6. 6 Abderamane Moussa #1,922,722 worldwide 440 citations · 17 works
  7. 7 Kadidja Gamougam #2,092,182 worldwide 446 citations · 24 works
  8. 8 Mahamat Fayiz Abakar #2,151,328 worldwide 608 citations · 46 works
  9. 9 Jacquineau Azétsop #2,437,994 worldwide 306 citations · 20 works
  10. 10 Mahamat Béchir #2,864,063 worldwide 622 citations · 28 works
Top researchers in Chad

How open and international is Chad's research?

79% of its research is openly available (world: 40%), and 47% is written with international co-authors (world: 18%).

openly available79.1%not open20.9%

World: 40% of research is openly available.

with international co-authors46.9%domestic only53.1%

World: 18% is written across borders.

In 2022-now, 85% of its research is openly available (world 63%) and 57% is written with co-authors abroad (world 22%). Against what its own mix of topics predicts, that is 1.19× the expected open access and 1.80× the expected international share, which puts it #25 of 173 countries on openness.

How has Chad's research grown?

Output in 2022-2025 was 104% higher than in 2018-2021.

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Chad as a percentage of every work published that year, 0.0026% in 2024.

still counting0.0050%0.010%Chad0.0026% in 202519801990200020102020

Fractional works of Chad over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Over the whole record, 5.2% of its 1.7k works since 1952 reached the world top 10% for their field and year.

still counting5%10%15%all institutions10.0% in 2025Chad3.9% in 202520102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 8.8% in 2017.

Which countries have research most like Chad's?

Burkina Faso is Chad's closest research twin: of all countries, its research is spread across the fields most like Chad's, with both strong in Agricultural and Biological Sciences.

  1. 1 Burkina FasoBoth strong in Agricultural and Biological Sciences, Nursing, Immunology and Microbiology 0.89 Compare
  2. 2 CameroonBoth strong in Agricultural and Biological Sciences, Nursing, Immunology and Microbiology 0.89 Compare
  3. 3 NigerBoth strong in Agricultural and Biological Sciences, Nursing, Immunology and Microbiology 0.86 Compare
  4. 4 BeninBoth strong in Agricultural and Biological Sciences, Nursing, Environmental Science 0.81 Compare
  5. 5 Central African RepublicBoth strong in Immunology and Microbiology, Nursing, Agricultural and Biological Sciences 0.80 Compare

Similarity is the correlation of each side's location quotients across every field it publishes in, on a log scale: 1 is the same shape of research, 0 is unrelated. It ignores size. How it is measured.

Compare Chad with

Compare any two

Share Chad's ranking

Chad on Science Explorer

A card with Chad's standing and the fields it leads in, for a post or a slide. A link to this page previews as the same card.

Download the card

1200 × 630 PNG, sized for social posts, drawn from the latest snapshot.

Badges for a website1Each links back here and updates with every snapshot

Discussion

Ask a question or share a note about Chad. Posts are plain text and can be reported.