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Animal Science and Veterinary
USA
2025

D-Index & Metrics

Animal Science and Veterinary

D-Index
93
Citations
36345
World Ranking
25
National Ranking
9

Microbiology

D-Index
92
Citations
35952
World Ranking
615
National Ranking
286

Ronald Fayer publication distribution in Animal Science and Veterinary in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Animal Science and Veterinary in 2026. The highlighted bar marks where Ronald Fayer sits on this spectrum.

29–33 publications: 1 scientists 34–38 publications: 6 scientists 39–43 publications: 17 scientists 44–48 publications: 23 scientists 49–53 publications: 28 scientists 54–58 publications: 44 scientists 59–63 publications: 66 scientists 64–68 publications: 75 scientists 69–73 publications: 71 scientists 74–78 publications: 85 scientists 79–83 publications: 108 scientists 84–88 publications: 105 scientists 89–93 publications: 84 scientists 94–98 publications: 103 scientists 99–103 publications: 97 scientists 104–108 publications: 95 scientists 109–113 publications: 89 scientists 114–118 publications: 88 scientists 119–123 publications: 109 scientists 124–128 publications: 93 scientists 129–133 publications: 89 scientists 134–138 publications: 95 scientists 139–143 publications: 92 scientists 144–148 publications: 80 scientists 149–153 publications: 75 scientists 154–158 publications: 74 scientists 159–163 publications: 67 scientists 164–168 publications: 53 scientists 169–173 publications: 62 scientists 174–178 publications: 63 scientists 179–183 publications: 50 scientists 184–188 publications: 55 scientists 189–193 publications: 50 scientists 194–198 publications: 27 scientists 199–203 publications: 44 scientists 204–208 publications: 31 scientists 209–213 publications: 28 scientists 214–218 publications: 38 scientists 219–223 publications: 33 scientists 224–228 publications: 36 scientists 229–233 publications: 29 scientists 234–238 publications: 35 scientists 239–243 publications: 23 scientists 244–248 publications: 24 scientists 249–253 publications: 29 scientists 254–258 publications: 28 scientists 259–263 publications: 21 scientists 264–268 publications: 25 scientists 269–273 publications: 11 scientists 274–278 publications: 18 scientists 279–283 publications: 13 scientists 284–288 publications: 18 scientists 289–293 publications: 10 scientists 294–298 publications: 12 scientists 299–303 publications: 11 scientists 304–308 publications: 15 scientists 309–313 publications: 14 scientists 314–318 publications: 14 scientists 319–323 publications: 8 scientists 324–328 publications: 8 scientists 329–333 publications: 13 scientists 334–338 publications: 14 scientists 339–343 publications: 13 scientists 344–348 publications: 10 scientists 349–353 publications: 11 scientists 354–358 publications: 5 scientists 359–363 publications: 8 scientists 364–368 publications: 8 scientists 369–373 publications: 6 scientists 374–378 publications: 7 scientists 379–383 publications: 8 scientists 384–388 publications: 3 scientists 389–393 publications: 4 scientists 394–398 publications: 5 scientists 399–403 publications: 8 scientists 404–408 publications: 5 scientists 409–413 publications: 4 scientists 414–418 publications: 3 scientists 419–423 publications: 8 scientists 424–428 publications: 5 scientists 429–433 publications: 3 scientists 434–438 publications: 5 scientists 439–441 publications: 5 scientists 442+ publications: 99 scientists
29 publications 442+

This scientist: 400 publications — 95th percentile

95% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 442 publications or more.

Ronald Fayer D-index placement in Animal Science and Veterinary in 2026

The chart shows the D-index (discipline H-index) distribution of Animal Science and Veterinary scientists ranked by Research.com in 2026. The highlighted bar marks where Ronald Fayer sits on this spectrum.

20 D-Index: 5 scientists 21 D-Index: 22 scientists 22 D-Index: 31 scientists 23 D-Index: 44 scientists 24 D-Index: 53 scientists 25 D-Index: 66 scientists 26 D-Index: 80 scientists 27 D-Index: 101 scientists 28 D-Index: 106 scientists 29 D-Index: 116 scientists 30 D-Index: 154 scientists 31 D-Index: 158 scientists 32 D-Index: 143 scientists 33 D-Index: 137 scientists 34 D-Index: 126 scientists 35 D-Index: 134 scientists 36 D-Index: 112 scientists 37 D-Index: 115 scientists 38 D-Index: 105 scientists 39 D-Index: 111 scientists 40 D-Index: 107 scientists 41 D-Index: 87 scientists 42 D-Index: 74 scientists 43 D-Index: 62 scientists 44 D-Index: 61 scientists 45 D-Index: 41 scientists 46 D-Index: 51 scientists 47 D-Index: 43 scientists 48 D-Index: 28 scientists 49 D-Index: 47 scientists 50 D-Index: 40 scientists 51 D-Index: 34 scientists 52 D-Index: 33 scientists 53 D-Index: 43 scientists 54 D-Index: 16 scientists 55 D-Index: 32 scientists 56 D-Index: 21 scientists 57 D-Index: 18 scientists 58 D-Index: 28 scientists 59 D-Index: 33 scientists 60 D-Index: 17 scientists 61 D-Index: 21 scientists 62 D-Index: 18 scientists 63 D-Index: 21 scientists 64 D-Index: 9 scientists 65 D-Index: 20 scientists 66 D-Index: 11 scientists 67 D-Index: 16 scientists 68 D-Index: 12 scientists 69 D-Index: 17 scientists 70 D-Index: 13 scientists 71 D-Index: 15 scientists 72 D-Index: 11 scientists 73 D-Index: 11 scientists 74 D-Index: 14 scientists 75 D-Index: 5 scientists 76 D-Index: 6 scientists 77+ D-Index: 100 scientists
20 D-Index 77+

This scientist: 93 D-Index — 99th percentile

99% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 77 D-Index or more.

Research.com Recognitions

  • 2025 - Research.com Animal Science and Veterinary in United States Leader Award
  • 2023 - Research.com Animal Science and Veterinary in United States Leader Award
  • 2022 - Research.com Animal Science and Veterinary in United States Leader Award

Overview

Ronald Fayer is affiliated with the United States Department of Agriculture in the United States. Their research spans the fields of Immunology and Microbiology, as well as Medicine, with a particular focus on Parasitology and Infectious Diseases as subfields of study.

The main topics addressed in their work include Parasitic Infections and Diagnostics and Amoebic Infections and Treatments.

The scientist has contributed to the scholarly literature with publications in venues such as the International Journal for Parasitology.

  • Taxonomy and molecular epidemiology of Cryptosporidium and Giardia - a 50 year perspective (1971-2021), 2021, International Journal for Parasitology

Their frequent coauthors include:

  • Una Ryan
  • Yaoyu Feng
  • Lihua Xiao

Best Publications

  • CRYPTOSPORIDIUM SPP. AND CRYPTOSPORIDIOSIS

    R. Fayer;B. L. P. Ungar

  • Cryptosporidium Taxonomy: Recent Advances and Implications for Public Health

    Lihua Xiao;Ronald Fayer;Una Ryan;Steve J. Upton

  • Epidemiology of Cryptosporidium: transmission, detection and identification.

    Ronald Fayer;Una Morgan;Steve J Upton

  • A review of the global burden, novel diagnostics, therapeutics, and vaccine targets for cryptosporidium

    William Checkley;William Checkley;A. Clinton White;Devan Jaganath;Michael J. Arrowood

  • Sarcocystosis of animals and man

    J. P. Dubey;R. Calero-Bernal;B.M. Rosenthal;C.A. Speer

  • Phylogenetic Analysis of Cryptosporidium Parasites Based on the Small-Subunit rRNA Gene Locus

    Lihua Xiao;Lillian Escalante;Chunfu Yang;Irshad Sulaiman

  • Triosephosphate Isomerase Gene Characterization and Potential Zoonotic Transmission of Giardia duodenalis

    Irshad M. Sulaiman;Ronald Fayer;Caryn Bern;Robert H. Gilman

  • Cryptosporidium: a water-borne zoonotic parasite

    Ronald Fayer

  • Cryptosporidium species in humans and animals: current understanding and research needs

    Una Ryan;Ronald Fayer;Lihua Xiao

  • Molecular characterisation of species and genotypes of Cryptosporidium and Giardia and assessment of zoonotic transmission

    Lihua Xiao;Ronald Fayer

  • GENETIC DIVERSITY WITHIN CRYPTOSPORIDIUM PARVUM AND RELATED CRYPTOSPORIDIUM SPECIES

    Lihua Xiao;Una M. Morgan;Josef Limor;Ananias Escalante

  • Prevalence and age-related variation of Cryptosporidium species and genotypes in dairy calves.

    Mónica Santı́n;James M Trout;Lihua Xiao;Ling Zhou

  • Cryptosporidium hominis n. sp. (Apicomplexa: Cryptosporidiidae) from Homo sapiens

    Una M. Morgan-Ryan;Abbie Fall;Lucy A. Ward;Nawal Hijjawi

  • Taxonomy and species delimitation in Cryptosporidium.

    Ronald Fayer

  • Zoonotic protozoa: from land to sea

    Ronald Fayer;Jitender P. Dubey;David S. Lindsay

  • Cryptosporidiosis of Man and Animals

    J. P. Dubey;C. A. Speer;R. Fayer

  • Sarcocystis spp. in Human Infections

    Ronald Fayer

  • Wide geographic distribution of Cryptosporidium bovis and the deer-like genotype in bovines.

    Yaoyu Feng;Ynes Ortega;Guosheng He;Pradeep Das

  • Host adaptation and host-parasite co-evolution in Cryptosporidium: implications for taxonomy and public health.

    Lihua Xiao;Irshad M Sulaiman;Una M Ryan;Ling Zhou

  • Microsporidiosis: Enterocytozoon bieneusi in domesticated and wild animals.

    Mónica Santín;Ronald Fayer

  • Prevalence of species and genotypes of Cryptosporidium found in 1-2-year-old dairy cattle in the eastern United States.

    Ronald Fayer;Mónica Santín;James M. Trout;Ellis Greiner

  • General biology of Cryptosporidium.

    R. Fayer;C. A. Speer;J. P. Dubey

Frequent Co-Authors

Mónica Santín
Mónica Santín United States Department of Agriculture
James M. Trout
James M. Trout United States Department of Agriculture
Lihua Xiao
Lihua Xiao South China Agricultural University
R.C.A. Thompson
R.C.A. Thompson Murdoch University
Huw V. Smith
Huw V. Smith Stobhill Hospital
Simone M. Cacciò
Simone M. Cacciò Istituto Superiore di Sanità
Jitender P. Dubey
Jitender P. Dubey Agricultural Research Service
Mark C. Jenkins
Mark C. Jenkins United States Department of Agriculture
Thaddeus K. Graczyk
Thaddeus K. Graczyk Johns Hopkins University
Altaf A. Lal
Altaf A. Lal Sun Pharma (India)

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Related Online Degrees & Career Pathways

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For those committed to academic and supervisory roles, pursuing an online phd counselor education and supervision can elevate your expertise to train future counselors within veterinary and animal sciences, bridging research, education, and practice.

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