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Researcher · University of Pretoria · South Africa

John Duncan Grewar

John Duncan Grewar publishes mostly in Agronomy and Crop Science, Ecology, Evolution, Behavior and Systematics and Infectious Diseases, on topics such as Vector-Borne Animal Diseases, Animal Disease Management and Epidemiology and Viral Infections and Vectors.

ORCID 0000-0002-4496-8051 OpenAlex
World rank
#2,891,964
of 7,710,434 ranked researchers
Rank in South Africa
#12,449
of 29,826
Works
64
Citations
698
Citations per work
10.9
h-index
15
i10-index 24Top 26% in Agronomy and Crop Science
John Duncan Grewar

What does John Duncan Grewar research?

John Duncan Grewar's work is mostly in Agricultural and Biological Sciences (38%), Medicine (29%), Veterinary (5%).

Life Sciences: 24 works · 37.8% of their workAgricultural and Biological Sciences: 24 works · 37.8% of their workAgronomy and Crop Science: 12 works · 18.9% of their workEcology, Evolution, Behavior and Systematics: 12 works · 18.9% of their workHealth Sciences: 22 works · 34.0% of their workMedicine: 19 works · 29.0% of their workInfectious Diseases: 10 works · 16.4% of their workEpidemiology: 5 works · 8.2% of their workPublic Health, Environmental and Occupational Health: 3 works · 4.4% of their workVeterinary: 3 works · 5.0% of their workEquine: 3 works · 5.0% of their workEverything else: 18 works · 28.2% of their workTHEIR WORKJohn DuncanGrewar64works
Life Sciences38%Health Sciences34%

Their six largest subfields, inside their fields and domains; the grey slice is everything else they publish. The interactive view splits every one of their works down to single topics.

The fields and subfields, with their numbers
    1. Agricultural and Biological Sciences2437.8%
    1. Medicine1929.0%
    2. Veterinary35.0%
  3. Everything else1828.2%
  1. 1Agronomy and Crop Science19% of their works
  2. 2Ecology, Evolution, Behavior and Systematics19% of their works
  3. 3Infectious Diseases16% of their works
  4. 4Epidemiology8% of their works
  5. 5Equine5% of their works
  6. 6Public Health, Environmental and Occupational Health4% of their works

Research topics

Which keywords describe John Duncan Grewar's research?

The keywords of their largest research topics: Epidemiology, Pathogenesis, Genetic Characterization, Vaccines, Viral Pathogenesis, Bluetongue Virus, Culicoides Biting Midges and African Swine Fever.

Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most.

All 21 words, with their numbers
  1. Epidemiology624 topics
  2. Pathogenesis563 topics
  3. Genetic Characterization522 topics
  4. Vaccines332 topics
  5. Viral Pathogenesis302 topics
  6. Bluetongue Virus281 topic
  7. Culicoides Biting Midges281 topic
  8. African Swine Fever241 topic
  9. Foot-and-Mouth Disease241 topic
  10. Viral Hemorrhagic Fevers231 topic
  11. Zoonotic Infections231 topic
  12. Equine Health81 topic
  13. Welfare Assessment81 topic
  14. Nipah Virus61 topic
  15. One Health61 topic
  16. Paramyxovirus61 topic
  17. Zoonotic Diseases61 topic
  18. Influenza51 topic
  19. Virus51 topic
  20. Mycoplasma41 topic
  21. Pasteurella41 topic

Where does John Duncan Grewar work?

John Duncan Grewar's main affiliation in the publication record is University of Pretoria, South Africa.

How many publications and citations does John Duncan Grewar have?

OpenAlex counts 64 works and 698 citations for John Duncan Grewar, an h-index of 15, ranking #2,891,964 of 7,710,434 researchers worldwide on the quality score.

Ranked on field-normalised excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.

Papers, co-authors, who cited this work and researchers on the nearest topics have tabs of their own, above. Is this your page? Claim it with your ORCID iD, or request a correction or removal.

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