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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Animal Science and Veterinary 36 1615 1488 133 119 146 4700

John W. Lewis publications per year

The chart shows the history of publications by John W. Lewis between 1969 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John W. Lewis published across 56 years, from 1969 to 2024, averaging 3 papers a year. Output peaked at 14 publications in 2003. 1 of the 167 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1969 to 2024. Vertical axis: number of publications, 0 to 14. Peak 14 publications in 2003. 1969: 1 publication 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 1 publication 1975: 0 publications 1976: 1 publication 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 1 publication 1984: 0 publications 1985: 1 publication 1986: 2 publications 1987: 1 publication 1988: 4 publications 1989: 1 publication 1990: 3 publications 1991: 5 publications 1992: 7 publications 1993: 10 publications 1994: 9 publications 1995: 4 publications 1996: 7 publications 1997: 2 publications 1998: 4 publications 1999: 2 publications 2000: 4 publications 2001: 10 publications 2002: 5 publications 2003: 14 publications 2004: 7 publications 2005: 9 publications 2006: 4 publications 2007: 4 publications 2008: 4 publications 2009: 3 publications 2010: 5 publications 2011: 0 publications 2012: 3 publications 2013: 3 publications 2014: 4 publications 2015: 3 publications 2016: 4 publications 2017: 7 publications 2018: 1 publication 2019: 2 publications 2020: 2 publications 2021: 2 publications 2022: 0 publications 2023: 0 publications 2024: 1 publication
1969 2024

167 publications in total across all disciplines

View publications per year as a table
John W. Lewis: publications per year, 1969 to 2024
Year Publications
1969 1
1970 0
1971 0
1972 0
1973 0
1974 1
1975 0
1976 1
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 1
1984 0
1985 1
1986 2
1987 1
1988 4
1989 1
1990 3
1991 5
1992 7
1993 10
1994 9
1995 4
1996 7
1997 2
1998 4
1999 2
2000 4
2001 10
2002 5
2003 14
2004 7
2005 9
2006 4
2007 4
2008 4
2009 3
2010 5
2011 0
2012 3
2013 3
2014 4
2015 3
2016 4
2017 7
2018 1
2019 2
2020 2
2021 2
2022 0
2023 0
2024 1
Total 167
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John W. Lewis publications per year - data summary

  • John W. Lewis, a Animal Science and Veterinary scholar from Royal Holloway University of London, has 167 publications recorded across 56 years, from 1969 to 2024.
  • The oldest publication on record dates to 1969 and the most recent to 2024.
  • The most productive year is 2003, with 14 publications.
  • The least productive years with any output are 1969, 1974, 1976, 1983 and others, with 1 publication each.
  • 15 of the 56 years in the span carry no publications at all (1970, 1971, 1972, 1973 and others).
  • The rate of publication averages 3.0 papers per year over the whole span, or 4.1 per year counting only the 41 years with at least one publication.
  • The last 5 years on the chart (2020-2024) hold 5 publications, 3% of the career total.
  • Split into equal eras - 1969-1987: 8 publications (0.4 per year); 1988-2006: 111 publications (5.8 per year); 2007-2024: 48 publications (2.7 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

John W. Lewis 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 John W. Lewis 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, 144–148 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: 146 publications — 54th percentile

54% 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 80 146
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
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

John W. Lewis publication distribution in Animal Science and Veterinary in 2026 - data summary

  • The chart plots the publication count of all 3,155 Animal Science and Veterinary scientists ranked by Research.com in 2026, grouped into 84 ranges running from 29–33 to 442+ publications.
  • John W. Lewis, a Animal Science and Veterinary scholar from Royal Holloway University of London, records 146 publications - the 54th percentile of the discipline.
  • 54% of ranked Animal Science and Veterinary scientists score the same or lower than John W. Lewis, and about 46% score higher.
  • The median of the discipline falls in the 139–143 publications range, and John W. Lewis ranks above the median.
  • The most crowded range is 119–123 publications, holding 109 scientists (3% of the field).
  • 47% of the field sits in the lowest quarter of the value range (up to 129–133 publications), so the distribution leans towards the lower end of the scale.
  • The final bar has no upper bound: it groups every scientist with 442 publications or more, 99 scientists in all (3% of the field).

John W. Lewis 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 John W. Lewis 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, 36 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: 36 D-Index — 50th percentile

50% 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 36
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
Download as CSV

John W. Lewis D-index placement in Animal Science and Veterinary in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 3,155 Animal Science and Veterinary scientists ranked by Research.com in 2026, grouped into 58 ranges running from 20 to 77+ D-Index.
  • John W. Lewis, a Animal Science and Veterinary scholar from Royal Holloway University of London, records 36 D-Index - the 50th percentile of the discipline.
  • 50% of ranked Animal Science and Veterinary scientists score the same or lower than John W. Lewis, and about 50% score higher.
  • The median of the discipline falls in the 36 D-Index range, and John W. Lewis falls inside that same range.
  • The most crowded range is 31 D-Index, holding 158 scientists (5% of the field).
  • 43% of the field sits in the lowest quarter of the value range (up to 34 D-Index), so the distribution leans towards the lower end of the scale.
  • The final bar has no upper bound: it groups every scientist with 77 D-Index or more, 100 scientists in all (3% of the field).

Overview

John W. Lewis is affiliated with Royal Holloway University of London in the United Kingdom. Their research activity is primarily concentrated in the fields of immunology and microbiology, with a focus on parasitology within these disciplines.

The main topics covered in their work include:

  • Leptospirosis research and findings
  • Parasites and Host Interactions

Lewis has published research in recognized scientific journals. Notable papers include:

  • "Prevalence of anti-Leptospira antibodies and associated risk factors in the Malaysian refugee communities" (2021), published in BMC Infectious Diseases
  • "Entry of Migrant Workers to Malaysia: Consideration to Implement Mass Drug Administration Against Intestinal Parasitic Infections" (2024), published in International Journal of Health Policy and Management

Frequent co-authors contributing to these works include:

  • Norhidayu Sahimin
  • Jerzy M. Behnke
  • Siti Nursheena Mohd Zain
  • Izzah Ruzana Mohd Hanapi
  • Michael John Banuru Maackara

The scientist's publications have appeared multiple times in the following venues:

  • BMC Infectious Diseases
  • International Journal of Health Policy and Management

Best Publications

  • Gill Damage in the Freshwater Fish Gnathonemus Petersii (Family: Mormyridae) Exposed to Selected Pollutants: An Ultrastructural Study

    B. M. Alazemi;J. W. Lewis;E. B. Andrews

  • Song as an indicator of parasitism in the sedge warbler.

    Katherine L. Buchanan;C. K. Catchpole;J. W. Lewis;A. Lodge

  • Helminth infections in Apodemus sylvaticus in southern England: interactive effects of host age, sex and year on the prevalence and abundance of infections.

    Jerzy M. Behnke;John W. Lewis;S.N. Mohd Zain;Francis Gilbert

  • Do the helminth parasites of wood mice interact

    J. M. Behnke;F. S. Gilbert;M. A. Abu-Madi;J. W. Lewis

  • Epidemiological studies on intestinal helminth parasites of rural and urban red foxes (Vulpes vulpes) in the United Kingdom

    D.T. Richards;S. Harris;J.W. Lewis

  • Pollution toxicity to the transmission of larval digeneans through their molluscan hosts.

    N. J. Morley;S. W. B. Irwin;J. W. Lewis

  • Seasonal and site specific variation in the component community structure of intestinal helminths in Apodemus sylvaticus from three contrasting habitats in south-east England.

    Marwan A. Abu-Madi;Jerzy M. Behnke;John W. Lewis;Francis Gilbert

  • Fish macroparasites as indicators of heavy metal pollution in river sites in Austria.

    C. Schludermann;R. Konecny;S. Laimgruber;J.W. Lewis

  • Molecular evidence that Heligmosomoides polygyrus from laboratory mice and wood mice are separate species

    Joanne Cable;P. D. Harris;J. W. Lewis;J. M. Behnke

  • Thermodynamics of cercarial development and emergence in trematodes.

    N. J. Morley;J. W. Lewis

  • Effect of salinity on hatching, survival and infectivity of Anguillicola crassus (Nematoda: Dracunculoidea) larvae.

    R S Kirk;C R Kennedy;J W Lewis

  • Helminth communities from two urban rat populations in Kuala Lumpur, Malaysia

    Siti Nursheena Mohd Zain;J M Behnke;J W Lewis

  • Pollutant-induced effects on immunological and physiological interactions in aquatic host -trematode systems: implications for parasite transmission

    N.J. Morley;J.W. Lewis;D. Hoole

  • Human Leptospirosis in Malaysia: Reviewing the Challenges After 8 Decades (1925-2012).

    Douadi Benacer;Kwai Lin Thong;Khebir Bin Verasahib;Renee L. Galloway

  • Survival and transmission of Anguillicola crassus Kuwahara, Niimi & Itagaki, 1974 (Nematoda) in seawater eels

    R. S. Kirk;J. W. Lewis;C. R. Kennedy

  • The potential use of the South African river crab, Potamonautes warreni, as a bioindicator species for heavy metal contamination.

    Schuwerack Pm;Lewis Jw;Jones P

  • Intestinal helminths of feral cat populations from urban and suburban districts of Qatar.

    Marawan A. Abu-Madi;Jerzy M. Behnke;K.S. Prabhaker;Roda Al-Ibrahim

  • The life-cycle and morphology of Sanguinicola inermis Plehn, 1905 (Digenea: Sanguinicolidae)

    R. S. Kirk;J. W. Lewis

  • Temperature stress and parasitism of endothermic hosts under climate change

    Neil J. Morley;John W. Lewis

  • Descriptive epidemiology of Heligmosomoides polygyrus in Apodemus sylvaticus from three contrasting habitats in south-east England

    Marwan A. Abu-Madi;Jerzy M. Behnke;John W. Lewis;Francis Gilbert

  • Migrant Workers in Malaysia: Current Implications of Sociodemographic and Environmental Characteristics in the Transmission of Intestinal Parasitic Infections.

    Norhidayu Sahimin;Yvonne A. L. Lim;Farnaza Ariffin;Jerzy M. Behnke

  • Macroparasite communities in stray cat populations from urban cities in Peninsular Malaysia

    Siti Nursheena Mohd Zain;Norhidayu Sahimin;Paul Pal;John W. Lewis

  • Rainfall induces time-lagged changes in the proportion of tropical aquatic hosts infected with metazoan parasites.

    Daniel Pech;Ma. Leopoldina Aguirre-Macedo;Ma. Leopoldina Aguirre-Macedo;John W. Lewis;Victor M. Vidal-Martínez;Victor M. Vidal-Martínez

  • The life-cycle of Ergasilus sieboldi Nordmann (Copepoda: Poecilostomatoida), parasitic on British freshwater fish.

    A.I. Abdelhalim;J.W. Lewis;G.A. Boxshall

  • Microorganisms as an Indicator of Hygiene Status Among Migrant Food Handlers in Peninsular Malaysia.

    Pei Yee Woh;Kwai Lin Thong;Yvonne Ai Lian Lim;Jerzy Marian Behnke

  • Socio-demographic determinants of Toxoplasma gondii seroprevalence in migrant workers of Peninsular Malaysia

    Norhidayu Sahimin;Yvonne A. L. Lim;Farnaza Ariffin;Jerzy M. Behnke

  • Ultrastructural observations on the cellular response of carp, Cyprinus carpio L., to eggs of the blood fluke Sanguinicola inermis Plehn, 1905 (Trematoda: Sanguinicolidae)

    D. T. Richards;D. Hoole;J. W. Lewis;E. Ewens

  • Cellular responses to increasing Cd concentrations in the freshwater crab, Potamonautes warreni, harbouring microbial gill infestations.

    P.-Manuela M. Schuwerack;P.-Manuela M. Schuwerack;John W. Lewis

  • Extreme climatic events and host–pathogen interactions: The impact of the 1976 drought in the UK

    N.J. Morley;J.W. Lewis

  • Parasitism and environmental pollution: parasites and hosts as indicators of water quality

    John Lewis;David Hoole;L. H. Chappell

  • Free-living endohelminths: the influence of multiple factors.

    Neil J. Morley;John W. Lewis

  • Nematodes: structure, development, classification and phylogeny: by V.V. Malakhov, Smithsonian Institution Press, 1994. US$25.00 (xii + 286 pages) ISBN 1 56098 255 1

    John W. Lewis

Frequent Co-Authors

Jerzy M. Behnke
Jerzy M. Behnke University of Nottingham
Mark Crane
Mark Crane Royal Holloway University of London
Kwai Lin Thong
Kwai Lin Thong University of Malaya
Francis Gilbert
Francis Gilbert University of Nottingham
Michael C. Thorndyke
Michael C. Thorndyke Royal Swedish Academy of Sciences
David Rollinson
David Rollinson Natural History Museum
Peter Jones
Peter Jones University of Cambridge
C. R. Kennedy
C. R. Kennedy University of Exeter
Yvonne A. L. Lim
Yvonne A. L. Lim University of Malaya

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