World's Best Scientists 2026 revealed!
Award Badge
Animal Science and Veterinary
USA
2025

D-Index & Metrics

Discipline name D-Index World Ranking National Ranking Publications Citations
Animal Science and Veterinary 93 25 9 400 36345
Microbiology 92 615 286 390 35952

Ronald Fayer publications per year

The chart shows the history of publications by Ronald Fayer between 1967 and 2021, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Ronald Fayer published across 55 years, from 1967 to 2021, averaging 7.4 papers a year. Output peaked at 37 publications in 2009. 2 of the 405 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1967 to 2021. Vertical axis: number of publications, 0 to 37. Peak 37 publications in 2009. 1967: 1 publication 1968: 1 publication 1969: 2 publications 1970: 3 publications 1971: 2 publications 1972: 5 publications 1973: 3 publications 1974: 2 publications 1975: 4 publications 1976: 5 publications 1977: 6 publications 1978: 1 publication 1979: 5 publications 1980: 2 publications 1981: 5 publications 1982: 4 publications 1983: 3 publications 1984: 3 publications 1985: 0 publications 1986: 10 publications 1987: 5 publications 1988: 5 publications 1989: 3 publications 1990: 12 publications 1991: 10 publications 1992: 6 publications 1993: 4 publications 1994: 5 publications 1995: 6 publications 1996: 13 publications 1997: 9 publications 1998: 15 publications 1999: 18 publications 2000: 18 publications 2001: 8 publications 2002: 8 publications 2003: 13 publications 2004: 14 publications 2005: 9 publications 2006: 10 publications 2007: 22 publications 2008: 9 publications 2009: 37 publications 2010: 9 publications 2011: 8 publications 2012: 9 publications 2013: 7 publications 2014: 12 publications 2015: 30 publications 2016: 2 publications 2017: 0 publications 2018: 0 publications 2019: 0 publications 2020: 1 publication 2021: 1 publication
1967 2021

405 publications in total across all disciplines

View publications per year as a table
Ronald Fayer: publications per year, 1967 to 2021
Year Publications
1967 1
1968 1
1969 2
1970 3
1971 2
1972 5
1973 3
1974 2
1975 4
1976 5
1977 6
1978 1
1979 5
1980 2
1981 5
1982 4
1983 3
1984 3
1985 0
1986 10
1987 5
1988 5
1989 3
1990 12
1991 10
1992 6
1993 4
1994 5
1995 6
1996 13
1997 9
1998 15
1999 18
2000 18
2001 8
2002 8
2003 13
2004 14
2005 9
2006 10
2007 22
2008 9
2009 37
2010 9
2011 8
2012 9
2013 7
2014 12
2015 30
2016 2
2017 0
2018 0
2019 0
2020 1
2021 1
Total 405
Download as CSV

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.

No. of scientists
25 50 75 100
Bar chart with 84 bars. Horizontal axis: publications, 29–33 to 442+. Vertical axis: number of scientists, 0 to 109. Most scientists, 109, have 119–123 publications. The last bar groups every scientist with 442 publications or more. The highlighted bar, 399–403 publications, is where this scientist sits. 29–33 publications: 1 scientist 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
29–33 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.

View publications distribution as a table
Number of Animal Science and Veterinary scientists by publication count, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
Publications Scientists This scientist
29–33 1
34–38 6
39–43 17
44–48 23
49–53 28
54–58 44
59–63 66
64–68 75
69–73 71
74–78 85
79–83 108
84–88 105
89–93 84
94–98 103
99–103 97
104–108 95
109–113 89
114–118 88
119–123 109
124–128 93
129–133 89
134–138 95
139–143 92
144–148 80
149–153 75
154–158 74
159–163 67
164–168 53
169–173 62
174–178 63
179–183 50
184–188 55
189–193 50
194–198 27
199–203 44
204–208 31
209–213 28
214–218 38
219–223 33
224–228 36
229–233 29
234–238 35
239–243 23
244–248 24
249–253 29
254–258 28
259–263 21
264–268 25
269–273 11
274–278 18
279–283 13
284–288 18
289–293 10
294–298 12
299–303 11
304–308 15
309–313 14
314–318 14
319–323 8
324–328 8
329–333 13
334–338 14
339–343 13
344–348 10
349–353 11
354–358 5
359–363 8
364–368 8
369–373 6
374–378 7
379–383 8
384–388 3
389–393 4
394–398 5
399–403 8 400
404–408 5
409–413 4
414–418 3
419–423 8
424–428 5
429–433 3
434–438 5
439–441 5
442+ 99
Download as CSV

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.

No. of scientists
50 100 150
Bar chart with 58 bars. Horizontal axis: D-Index, 20 to 77+. Vertical axis: number of scientists, 0 to 158. Most scientists, 158, have 31 D-Index. The last bar groups every scientist with 77 D-Index or more. The highlighted bar, 77+ D-Index, is where this scientist sits. 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.

View D-Index distribution as a table
Number of Animal Science and Veterinary scientists by D-index, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
D-Index Scientists This scientist
20 5
21 22
22 31
23 44
24 53
25 66
26 80
27 101
28 106
29 116
30 154
31 158
32 143
33 137
34 126
35 134
36 112
37 115
38 105
39 111
40 107
41 87
42 74
43 62
44 61
45 41
46 51
47 43
48 28
49 47
50 40
51 34
52 33
53 43
54 16
55 32
56 21
57 18
58 28
59 33
60 17
61 21
62 18
63 21
64 9
65 20
66 11
67 16
68 12
69 17
70 13
71 15
72 11
73 11
74 14
75 5
76 6
77+ 100 93
Download as CSV

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)

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For students interested in advancing their careers in Animal Science and Veterinary fields, exploring related online degrees can open diverse opportunities. Programs like online psyd programs accredited by apa offer pathways for those aiming to integrate behavioral sciences with animal welfare, enhancing skills in clinical psychology without the traditional GRE barrier.

In addition, the growing field of support services for both humans and animals presents a strong demand for expertise in counseling. Degrees such as the online addiction counseling degree prepare professionals to address substance abuse, a critical issue that can indirectly affect animal care environments through community health.

Counseling also extends to family dynamics and social contexts, which is vital for professionals working in veterinary practices or animal-related agencies. The online marriage and family therapy masters programs provide relevant skills for holistic support, helping families navigate the emotional aspects of animal care and ownership.

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.

Best Scientists Citing Ronald Fayer

Trending Scientists