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Researcher · Jikei University School of Medicine · Japan

Katsuya Hirai

Katsuya Hirai publishes mostly in Surgery, Epidemiology and Pulmonary and Respiratory Medicine, on topics such as Reproductive tract infections research, Virology and Viral Diseases and Vector-Borne Animal Diseases.

OpenAlex
World rank
#514,944
of 1,633,909 ranked researchers
Rank in Japan
#19,607
of 114,622
Works
54
Citations
109
Citations per work
2.0

What does Katsuya Hirai research?

Surgery: 17.5%Epidemiology: 11.3%Pulmonary and Respiratory Medicine: 8.8%Microbiology: 7.5%other fields: 54.9%18%top field
Surgery17.5%Epidemiology11.3%Pulmonary and Respiratory Medicine8.8%Microbiology7.5%other fields54.9%

Shares of their own output, by the field each of their topics belongs to. The grey slice is everything not listed.

  1. 1Surgery18% of their works
  2. 2Epidemiology11% of their works
  3. 3Pulmonary and Respiratory Medicine9% of their works
  4. 4Microbiology8% of their works
  5. 5Small Animals6% of their works
  6. 6Oncology6% of their works

Research topics

Which keywords describe Katsuya Hirai's research?

The keywords of their largest research topics: Epidemiology, Immune Response, Vaccine, Sexually Transmitted Infections, Vaginal Microbiome, Nipah Virus, Paramyxovirus and Bluetongue Virus.

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. Epidemiology135 topics
  2. Immune Response62 topics
  3. Vaccine62 topics
  4. Sexually Transmitted Infections51 topic
  5. Vaginal Microbiome51 topic
  6. Nipah Virus41 topic
  7. Paramyxovirus41 topic
  8. Bluetongue Virus31 topic
  9. Chronic Kidney Disease31 topic
  10. Culicoides Biting Midges31 topic
  11. Obesity31 topic
  12. Cervical Cancer21 topic
  13. Gene Therapy21 topic
  14. Herpes Zoster21 topic
  15. Herpesviruses21 topic
  16. Human Papillomavirus21 topic
  17. Lyme Disease21 topic
  18. Tick-Borne Diseases21 topic
  19. Viral Vectors21 topic

Where does Katsuya Hirai work?

Katsuya Hirai's main affiliation in the publication record is Jikei University School of Medicine, Japan.

How many publications and citations does Katsuya Hirai have?

Science Explorer counts 54 works and 109 citations for Katsuya Hirai, ranking #514,944 of 1,633,909 researchers worldwide on the composite 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 are in the interactive view on the map. Is this your page? Request a correction or removal.