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Researcher · University of Maryland, Baltimore · United States

Johnny D. Callahan

Johnny D. Callahan publishes mostly in Infectious Diseases, Agronomy and Crop Science and Public Health, Environmental and Occupational Health, on topics such as Animal Disease Management and Epidemiology, HIV Research and Treatment and Viral Infections and Immunology Research.

OpenAlex
World rank
#1,855,738
of 7,710,434 ranked researchers
Rank in United States
#568,450
of 1,627,098
Works
33
Citations
1.3k
Citations per work
38.3
h-index
9
i10-index 9Top 71% in Infectious Diseases
Johnny D. Callahan

What does Johnny D. Callahan research?

Johnny D. Callahan's work is mostly in Medicine (41%), Agricultural and Biological Sciences (10%), Immunology and Microbiology (8%).

Health Sciences: 13 works · 40.8% of their workMedicine: 13 works · 40.8% of their workInfectious Diseases: 5 works · 15.8% of their workPublic Health, Environmental and Occupational Health: 3 works · 10.5% of their workEpidemiology: 3 works · 7.9% of their workCardiology and Cardiovascular Medicine: 2 works · 6.6% of their workEverything else: 13 works · 40.8% of their workLife Sciences: 6 works · 18.4% of their workAgricultural and Biological Sciences: 3 works · 10.5% of their workAgronomy and Crop Science: 3 works · 10.5% of their workImmunology and Microbiology: 3 works · 7.9% of their workVirology: 3 works · 7.9% of their workTHEIR WORKJohnny D.Callahan33works
Life Sciences18%Health Sciences41%

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. Medicine1340.8%
  2. Everything else1340.8%
    1. Agricultural and Biological Sciences310.5%
    2. Immunology and Microbiology37.9%
  1. 1Infectious Diseases16% of their works
  2. 2Agronomy and Crop Science10% of their works
  3. 3Public Health, Environmental and Occupational Health10% of their works
  4. 4Virology8% of their works
  5. 5Epidemiology8% of their works
  6. 6Cardiology and Cardiovascular Medicine7% of their works

Research topics

Which keywords describe Johnny D. Callahan's research?

The keywords of their largest research topics: Epidemiology, Immune Response, Vaccine, African Swine Fever, Foot-and-Mouth Disease, AIDS, HIV and Myocarditis.

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 19 words, with their numbers
  1. Epidemiology195 topics
  2. Immune Response133 topics
  3. Vaccine102 topics
  4. African Swine Fever81 topic
  5. Foot-and-Mouth Disease81 topic
  6. AIDS61 topic
  7. HIV61 topic
  8. Myocarditis51 topic
  9. Viral Infection51 topic
  10. Arboviral Diseases41 topic
  11. Coronavirus41 topic
  12. Porcine Reproductive and Respiratory Syndrome Virus41 topic
  13. Zika Virus41 topic
  14. Gene Therapy31 topic
  15. HTLV-131 topic
  16. Hepatitis C Virus31 topic
  17. Infection31 topic
  18. Treatment31 topic
  19. Viral Vectors31 topic

Where does Johnny D. Callahan work?

Johnny D. Callahan's main affiliation in the publication record is University of Maryland, Baltimore, United States.

How many publications and citations does Johnny D. Callahan have?

OpenAlex counts 33 works and 1,264 citations for Johnny D. Callahan, an h-index of 9, ranking #1,855,738 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.

Discussion

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