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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 46 793 730 26 26 225 6891

Hafez M. Hafez publications per year

The chart shows the history of publications by Hafez M. Hafez between 1990 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hafez M. Hafez published across 36 years, from 1990 to 2025, averaging 8.1 papers a year. Output peaked at 41 publications in 2024. 42 of the 291 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1990 to 2025. Vertical axis: number of publications, 0 to 41. Peak 41 publications in 2024. 1990: 1 publication 1991: 0 publications 1992: 1 publication 1993: 0 publications 1994: 0 publications 1995: 0 publications 1996: 0 publications 1997: 0 publications 1998: 2 publications 1999: 5 publications 2000: 3 publications 2001: 1 publication 2002: 4 publications 2003: 4 publications 2004: 5 publications 2005: 10 publications 2006: 7 publications 2007: 9 publications 2008: 14 publications 2009: 15 publications 2010: 24 publications 2011: 16 publications 2012: 26 publications 2013: 9 publications 2014: 8 publications 2015: 5 publications 2016: 13 publications 2017: 14 publications 2018: 7 publications 2019: 9 publications 2020: 13 publications 2021: 11 publications 2022: 9 publications 2023: 4 publications 2024: 41 publications 2025: 1 publication
1990 2025

291 publications in total across all disciplines

View publications per year as a table
Hafez M. Hafez: publications per year, 1990 to 2025
Year Publications
1990 1
1991 0
1992 1
1993 0
1994 0
1995 0
1996 0
1997 0
1998 2
1999 5
2000 3
2001 1
2002 4
2003 4
2004 5
2005 10
2006 7
2007 9
2008 14
2009 15
2010 24
2011 16
2012 26
2013 9
2014 8
2015 5
2016 13
2017 14
2018 7
2019 9
2020 13
2021 11
2022 9
2023 4
2024 41
2025 1
Total 291
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Hafez M. Hafez publications per year - data summary

  • Hafez M. Hafez, a Animal Science and Veterinary scholar from Freie Universität Berlin, has 291 publications recorded across 36 years, from 1990 to 2025.
  • The oldest publication on record dates to 1990 and the most recent to 2025.
  • The most productive year is 2024, with 41 publications.
  • The least productive years with any output are 1990, 1992, 2001 and 2025, with 1 publication each.
  • 6 of the 36 years in the span carry no publications at all (1991, 1993, 1994, 1995 and others).
  • The rate of publication averages 8.1 papers per year over the whole span, or 9.7 per year counting only the 30 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 66 publications, 23% of the career total.
  • Split into equal eras - 1990-2001: 13 publications (1.1 per year); 2002-2013: 143 publications (11.9 per year); 2014-2025: 135 publications (11.3 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

Hafez M. Hafez 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 Hafez M. Hafez 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, 224–228 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: 225 publications — 79th percentile

79% 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 36 225
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

Hafez M. Hafez 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.
  • Hafez M. Hafez, a Animal Science and Veterinary scholar from Freie Universität Berlin, records 225 publications - the 79th percentile of the discipline.
  • 79% of ranked Animal Science and Veterinary scientists score the same or lower than Hafez M. Hafez, and about 21% score higher.
  • The median of the discipline falls in the 139–143 publications range, and Hafez M. Hafez 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).

Hafez M. Hafez 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 Hafez M. Hafez 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, 46 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: 46 D-Index — 76th percentile

76% 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 46
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

Hafez M. Hafez 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.
  • Hafez M. Hafez, a Animal Science and Veterinary scholar from Freie Universität Berlin, records 46 D-Index - the 76th percentile of the discipline.
  • 76% of ranked Animal Science and Veterinary scientists score the same or lower than Hafez M. Hafez, and about 24% score higher.
  • The median of the discipline falls in the 36 D-Index range, and Hafez M. Hafez ranks above the median.
  • 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

Hafez M. Hafez is affiliated with Freie Universität Berlin in Germany and has contributed significantly to the fields of Agricultural and Biological Sciences and Medicine. Their research spans various subfields including Animal Science and Zoology, Infectious Diseases, Epidemiology, Agronomy and Crop Science, and Food Science.

Their work covers several main topics such as Animal Virus Infections Studies, SARS-CoV-2 and COVID-19 Research, Animal Nutrition and Physiology, Influenza Virus Research Studies, Animal Disease Management and Epidemiology, Viral Gastroenteritis Research and Epidemiology, and Livestock and Poultry Management.

Hafez has published extensively in prominent journals. Frequent publication venues include:

  • Animals
  • Frontiers in Veterinary Science
  • German Journal of Veterinary Research
  • Microorganisms
  • Viruses

Notable recent papers authored or co-authored by Hafez are:

  • "Challenges to the Poultry Industry: Current Perspectives and Strategic Future After the COVID-19 Outbreak," 2020, Frontiers in Veterinary Science
  • "Influence of COVID-19 on the poultry production and environment," 2021, Environmental Science and Pollution Research

Frequent co-authors in their research collaborations include:

  • Awad A. Shehata
  • Youssef A. Attia
  • Shereen Basiouni
  • Asmaa F. Khafaga
  • Fulvia Bovera

Hafez's research covers important aspects related to poultry health and production, infectious disease management, and the effects of environmental and viral challenges such as the COVID-19 pandemic on animal industries. Their contributions reflect an interdisciplinary approach combining epidemiological insights with animal health and sustainability considerations.

Best Publications

  • The Effect of Glyphosate on Potential Pathogens and Beneficial Members of Poultry Microbiota In Vitro

    Awad A. Shehata;Wieland Schrödl;Alaa. A. Aldin;Hafez M. Hafez

  • Ornithobacterium rhinotracheale: A review.

    P. C. M. van Empel;H. M. Hafez

  • An overview of the epidemic of highly pathogenic H5N1 avian influenza virus in Egypt: epidemiology and control challenges.

    E. M. Abdelwhab;H. M. Hafez

  • Epidemiological, molecular characterization and antibiotic resistance of Salmonella enterica serovars isolated from chicken farms in Egypt

    Hanem El-Sharkawy;Hanem El-Sharkawy;Amin Tahoun;Amin Tahoun;Abd El-Galiel A. El-Gohary;Moshira El-Abasy

  • Differentiation of Avian Poxvirus Strains on the Basis of Nucleotide Sequences of 4b Gene Fragment

    D. Lüschow;T. Hoffmann;H. M. Hafez

  • Occurrence of Salmonella enterica and Escherichia coli in raw chicken and beef meat in northern Egypt and dissemination of their antibiotic resistance markers

    Amira A. Moawad;Helmut Hotzel;Omnia Awad;Herbert Tomaso

  • Isolation of H9N2 avian influenza virus from bobwhite quail (Colinus virginianus) in Egypt

    Elham F. El-Zoghby;Abdel-Satar Arafa;Mohamed K. Hassan;Mona M. Aly

  • Diagnosis of Ornithobacterium Rhinotracheale

    Hafez Mohamed Hafez

  • Highly pathogenic avian influenza virus H5N1 from Egypt escapes vaccine-induced immunity but confers clinical protection against a heterologous clade 2.2.1 Egyptian isolate

    Christian Grund;El-Sayed M. Abdelwhab;El-Sayed M. Abdelwhab;Abdel-Satar Arafa;Mario Ziller

  • Safety assessment of Bt 176 maize in broiler nutrition: degradation of maize-DNA and its metabolic fate

    Mohamed Ahmed Tony;Andreas Butschke;Hermann Broll;Lutz Grohmann

  • Comparison between killed and living probiotic usage versus placebo for the prevention of necrotizing enterocolitis and sepsis in neonates.

    H Awad;H Mokhtar;S S Imam;G I Gad

  • Prevalence of types of methicillin-resistant Staphylococcus aureus in turkey flocks and personnel attending the animals

    A. Richter;R. Sting;C. Popp;J. Rau

  • Anatomical distribution of avian bornavirus in parrots, its occurrence in clinically healthy birds and ABV-antibody detection

    Michael Lierz;Hafez Mohamed Hafez;Kirsi Honkavuori;Achim D. Gruber

  • Comparison of the Specificity and Sensitivity of PCR, Nested PCR, and Real-Time PCR for the Diagnosis of Histomoniasis

    H. M. Hafez;R. Hauck;D. Lüschow;L. McDougald

  • The use of FTA® filter papers for diagnosis of avian influenza virus.

    E.M. Abdelwhab;Dörte Lüschow;Timm C. Harder;Hafez M. Hafez

  • Antimicrobial resistance in Enterobacteriaceae from healthy broilers in Egypt: emergence of colistin-resistant and extended-spectrum β-lactamase-producing Escherichia coli .

    Amira A. Moawad;Helmut Hotzel;Heinrich Neubauer;Ralf Ehricht

  • Prevalence of mycoplasmas in eggs from birds of prey using culture and a genus-specific mycoplasma polymerase chain reaction

    Michael Lierz;Nils Hagen;Nigel Harcourt-Brown;Stephen J Hernandez-Divers

  • Investigations on different Ornithobacterium rhinotracheale "ORT" isolates.

    Hafez Mohamed Hafez;Reinhard Sting

  • Susceptibility and Multidrug Resistance Patterns of Escherichia coli Isolated from Cloacal Swabs of Live Broiler Chickens in Bangladesh.

    Ajiujur Aa Muha;M Rahman;Ruhul Amin;Mst Ia Begum

  • Multiple dose vaccination with heterologous H5N2 vaccine: immune response and protection against variant clade 2.2.1 highly pathogenic avian influenza H5N1 in broiler breeder chickens.

    E.M. Abdelwhab;Christian Grund;Mona M. Aly;Martin Beer

  • Influence of maternal immunity on vaccine efficacy and susceptibility of one day old chicks against Egyptian highly pathogenic avian influenza H5N1.

    E.M. Abdelwhab;Christian Grund;Mona M. Aly;Martin Beer

  • Efficacy of a herbal product against Histomonas meleagridis after experimental infection of turkey poults

    Hafez Mohamed Hafez;Rüdiger Hauck

  • PCR for specific detection of haemorrhagic enteritis virus of turkeys, an avian adenovirus

    M. Hess;R. Raue;H.M. Hafez

  • Surveillance on A/H5N1 virus in domestic poultry and wild birds in Egypt

    Elham F El-Zoghby;Mona M Aly;Soad A Nasef;Mohamed K Hassan

  • Protective efficacy of H5 inactivated vaccines in meat turkey poults after challenge with Egyptian variant highly pathogenic avian influenza H5N1 virus.

    Walid H. Kilany;E.M. Abdelwhab;Abdel-Satar Arafa;Abdullah Selim

  • Noninvasive Heart Rate Measurement Using a Digital Egg Monitor in Chicken and Turkey Embryos

    Michael Lierz;Olivia Gooss;Hafez M. Hafez

  • Protection and virus shedding of falcons vaccinated against highly pathogenic avian influenza A virus (H5N1).

    Michael Lierz;Hafez M. Hafez;Robert Klopfleisch;Dörte Lüschow

  • Poultry meat and food safety: pre- and post-harvest approaches to reduce foodborne pathogens

    Hafez M. Hafez

  • Isolation of highly pathogenic avian influenza H5N1 from table eggs after vaccinal break in commercial layer flock.

    W. H. Kilany;A. Arafa;A. M. Erfan;M. S. Ahmed

Frequent Co-Authors

Timm C. Harder
Timm C. Harder Kiel University
Heinrich Neubauer
Heinrich Neubauer Friedrich-Loeffler-Institut
Helmut Hotzel
Helmut Hotzel Friedrich-Loeffler-Institut
Achim D. Gruber
Achim D. Gruber Freie Universität Berlin
Martin Beer
Martin Beer Friedrich-Loeffler-Institut
Herbert Tomaso
Herbert Tomaso Friedrich-Loeffler-Institut
Michael Hess
Michael Hess University of Veterinary Medicine Vienna
Thomas C. Mettenleiter
Thomas C. Mettenleiter Friedrich-Loeffler-Institut
Katrin Hartmann
Katrin Hartmann Ludwig-Maximilians-Universität München
Heinz Mehlhorn
Heinz Mehlhorn Heinrich Heine University Düsseldorf

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