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Topic · Hematology

Blood groups and transfusion

Blood groups and transfusion is a research topic within Hematology. Science Explorer counts 42k research works in it since 1950. 10.1% of them reached the world's top 10% most cited for their field and year.

This cluster of papers explores the relationship between blood group variants, such as ABO and Rh, and various diseases including autoimmune hemolytic anemia, fetal anemia, COVID-19 susceptibility, and pancreatic cancer. It also investigates the impact of alloimmunization and RBC antigens on transfusion outcomes and disease risk.

  • Blood Groups
  • Alloimmunization
  • Anemia
  • ABO Locus
  • RBC Antigens
  • Autoimmune Hemolytic Anemia
  • Fetal Anemia
  • COVID-19 Susceptibility
  • Pancreatic Cancer
  • von Willebrand Factor
Research works
42k
fractional, since 1950
In the world top 10%
4.2k
per year above
Top-10% rate
10.1%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
+12%
the tick is no change
Largest producer
United States
35% of the 10 largest, 2022-now
Blood groups and transfusion

This ranks research output and citation impact. It says nothing about the quality of diagnosis, treatment or care.

Which countries lead Blood groups and transfusion research?

By volume, the United States and China publish the most (1.4k and 646 works in 2022-now).

By volume, 2022-now

  1. 1 United States 1.4k works
  2. 2 China 646 works
  3. 3 India 551 works
  4. 4 Brazil 241 works
  5. 5 France 234 works
  6. 6 Japan 197 works
  7. 7 United Kingdom 191 works
  8. 8 Italy 179 works
  9. 9 Germany 156 works
  10. 10 Canada 153 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

United States: 35.4%China: 16.4%India: 14.0%Brazil: 6.1%6 others listed: 28.2%35%largest
United States1,393 · 35.4%China646 · 16.4%India551 · 14.0%Brazil241 · 6.1%6 others listed1,110 · 28.2%

Shares of the rows listed above, not of the whole node.

Which institutions lead Blood groups and transfusion research?

By volume in 2022-now, Harvard University publishes the most Blood groups and transfusion research, followed by All India Institute of Medical Sciences and Inserm.

By volume, 2022-now

  1. 1 Harvard UniversityUnited States 52 works
  2. 2 All India Institute of Medical SciencesIndia 49 works
  3. 3 InsermFrance 39 works
  4. 4 Chinese Academy of Medical Sciences & Peking Union Medical CollegeChina 28 works
  5. 5 University of TorontoCanada 27 works
  6. 6 Emory UniversityUnited States 27 works
  7. 7 National Institutes of HealthUnited States 23 works
  8. 8 Johns Hopkins UniversityUnited States 23 works
  9. 9 Yale UniversityUnited States 23 works
  10. 10 Mayo ClinicUnited States 22 works

Who are the leading researchers in Blood groups and transfusion?

The most-cited researchers publishing on Blood groups and transfusion include George Davey Smith, Giuseppe Remuzzi and Matthias Egger.

  1. 1 George Davey Smith United Kingdom 435k citations
  2. 2 Giuseppe Remuzzi Italy 328k citations
  3. 3 Matthias Egger Switzerland 326k citations
  4. 4 John P. A. Ioannidis United States 317k citations
  5. 5 Gordon Henry Guyatt Canada 315k citations
  6. 6 Gregory Y.H. Lip United Kingdom 311k citations
  7. 7 Matthias Mann Germany 308k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in Blood groups and transfusion?

The most cited paper in Blood groups and transfusion is "Standardization of terminology, definitions and outcome criteria in immune thrombocytopenic purpura of adults and children: report from an international working group" (Francesco Rodeghiero, Roberto Stasi, Terry Gernsheimer et al., 2008), with 2,707 citations. Next come "Monoclonal Antibody to 5-Bromo- and 5-Iododeoxyuridine: A New Reagent for Detection of DNA Replication" (2,653) and "Genomic atlas of the human plasma proteome" (2,496).

Most cited papers
#PaperReleasedCitations
1 Standardization of terminology, definitions and outcome criteria in immune thrombocytopenic purpura of adults and children: report from an international working group Francesco Rodeghiero, Roberto Stasi, Terry Gernsheimer et al. · Blood Open access 12 Nov 2008 2,707
2 Monoclonal Antibody to 5-Bromo- and 5-Iododeoxyuridine: A New Reagent for Detection of DNA Replication Howard G. Gratzner · Science 29 Oct 1982 2,653
3 Genomic atlas of the human plasma proteome Benjamin B. Sun et al. · Nature Open access 29 May 2018 2,496
4 SURFACE MARKERS ON HUMAN T AND B LYMPHOCYTES Mikael Jondal, G. Holm, Hans Wigzell · The Journal of Experimental Medicine Open access Aug 1972 2,445
5 Treatment of 5 Critically Ill Patients With COVID-19 With Convalescent Plasma Chenguang Shen et al. · JAMA Open access 27 Mar 2020 2,425
All 100 most cited papers, with filters and sorting

Where is Blood groups and transfusion research done?

The largest centres of Blood groups and transfusion research in 2022-now are Paris (France), Beijing (China), London (United Kingdom) and New York (United States).

Largest cities, 2022-now

  1. 1 ParisFrance 113 works
  2. 2 BeijingChina 88 works
  3. 3 LondonUnited Kingdom 73 works
  4. 4 New YorkUnited States 69 works
  5. 5 São PauloBrazil 60 works
  6. 6 BostonUnited States 56 works
  7. 7 GuangzhouChina 52 works
  8. 8 New DelhiIndia 51 works
  9. 9 SeoulSouth Korea 48 works
  10. 10 TokyoJapan 47 works
See Blood groups and transfusion on the map

Where is the best place to study Blood groups and transfusion?

Among universities, judged by research, Harvard University, University of Milan and Leiden University score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%mean 21.86%fractional works in this field (log) →share of work in the world top 10% →Leiden UniversityUniversity of MilanHarvard UniversityEmory University
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1Harvard UniversityUnited States 77.424.7%3.1×52 +0.6%
2University of MilanItaly 66.435.5%4.2×14 +19.8%
3Leiden UniversityNetherlands 63.737.6%4.5×13 -9.4%
4Emory UniversityUnited States 62.821.5%6.5×27 -4.6%
5Johns Hopkins UniversityUnited States 56.922.6%2.9×23 -14.8%
6Cornell UniversityUnited States 55.920.7%2.9×20 +12.6%
7University of PennsylvaniaUnited States 55.818.9%3.2×17 +29.7%
8University of California, San FranciscoUnited States 54.023.2%4.2×15 +1.4%
9All India Institute of Medical SciencesIndia 53.13.6%8.7×50 +68.4%
10Yale UniversityUnited States 52.810.3%4.0×23 +38.5%

Universities only. The score blends excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Blood groups and transfusion, country by country

Is Blood groups and transfusion research growing?

Output in 2022-2025 was 12% higher than in 2018-2021, peaking in 2025. The fastest-growing topics are Blood groups and transfusion.

still counting19801990200020102020
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 Blood groups and transfusion as a percentage of every work published that year, 0.024% in 2024.

still counting0.050%0.10%0.15%Blood groups and transfusion0.025% in 202519801990200020102020

Fractional works of Blood groups and transfusion over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%Blood groups and transfusion10.6% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

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