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Hiroshi Ushijima

Hiroshi Ushijima

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Microbiology 75 1517 1372 38 34 473 17716

Hiroshi Ushijima publications per year

The chart shows the history of publications by Hiroshi Ushijima between 1962 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hiroshi Ushijima published across 65 years, from 1962 to 2026, averaging 8.8 papers a year. Output peaked at 49 publications in 2007. 14 of the 573 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1962 to 2026. Vertical axis: number of publications, 0 to 49. Peak 49 publications in 2007. 1962: 1 publication 1963: 0 publications 1964: 0 publications 1965: 0 publications 1966: 0 publications 1967: 0 publications 1968: 0 publications 1969: 1 publication 1970: 2 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 1 publication 1980: 4 publications 1981: 2 publications 1982: 1 publication 1983: 3 publications 1984: 4 publications 1985: 6 publications 1986: 10 publications 1987: 3 publications 1988: 5 publications 1989: 5 publications 1990: 8 publications 1991: 14 publications 1992: 10 publications 1993: 9 publications 1994: 7 publications 1995: 8 publications 1996: 7 publications 1997: 3 publications 1998: 5 publications 1999: 8 publications 2000: 12 publications 2001: 11 publications 2002: 6 publications 2003: 14 publications 2004: 22 publications 2005: 21 publications 2006: 26 publications 2007: 49 publications 2008: 19 publications 2009: 19 publications 2010: 21 publications 2011: 18 publications 2012: 23 publications 2013: 16 publications 2014: 16 publications 2015: 9 publications 2016: 14 publications 2017: 16 publications 2018: 14 publications 2019: 13 publications 2020: 12 publications 2021: 16 publications 2022: 14 publications 2023: 19 publications 2024: 12 publications 2025: 13 publications 2026: 1 publication
1962 2026

573 publications in total across all disciplines

View publications per year as a table
Hiroshi Ushijima: publications per year, 1962 to 2026
Year Publications
1962 1
1963 0
1964 0
1965 0
1966 0
1967 0
1968 0
1969 1
1970 2
1971 0
1972 0
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 1
1980 4
1981 2
1982 1
1983 3
1984 4
1985 6
1986 10
1987 3
1988 5
1989 5
1990 8
1991 14
1992 10
1993 9
1994 7
1995 8
1996 7
1997 3
1998 5
1999 8
2000 12
2001 11
2002 6
2003 14
2004 22
2005 21
2006 26
2007 49
2008 19
2009 19
2010 21
2011 18
2012 23
2013 16
2014 16
2015 9
2016 14
2017 16
2018 14
2019 13
2020 12
2021 16
2022 14
2023 19
2024 12
2025 13
2026 1
Total 573
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Hiroshi Ushijima publication distribution in Microbiology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where Hiroshi Ushijima sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 64 bars. Horizontal axis: publications, 55–64 to 679+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 135–144 publications. The last bar groups every scientist with 679 publications or more. The highlighted bar, 465–474 publications, is where this scientist sits. 55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 265 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 234 scientists 205–214 publications: 208 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55–64 publications 679+

This scientist: 473 publications — 94th percentile

94% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 679 publications or more.

View publications distribution as a table
Number of Microbiology scientists by publication count, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
Publications Scientists This scientist
55–64 8
65–74 29
75–84 55
85–94 112
95–104 137
105–114 190
115–124 235
125–134 234
135–144 288
145–154 265
155–164 264
165–174 253
175–184 276
185–194 190
195–204 234
205–214 208
215–224 198
225–234 155
235–244 161
245–254 160
255–264 146
265–274 139
275–284 148
285–294 115
295–304 96
305–314 88
315–324 106
325–334 65
335–344 76
345–354 64
355–364 62
365–374 65
375–384 61
385–394 34
395–404 44
405–414 36
415–424 35
425–434 29
435–444 33
445–454 34
455–464 25
465–474 26 473
475–484 20
485–494 19
495–504 16
505–514 17
515–524 23
525–534 14
535–544 14
545–554 18
555–564 12
565–574 7
575–584 9
585–594 9
595–604 9
605–614 7
615–624 9
625–634 7
635–644 4
645–654 5
655–664 6
665–674 7
675–678 3
679+ 99
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Hiroshi Ushijima D-index placement in Microbiology in 2026

The chart shows the D-index (discipline H-index) distribution of Microbiology scientists ranked by Research.com in 2026. The highlighted bar marks where Hiroshi Ushijima sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 88 bars. Horizontal axis: D-Index, 40 to 127+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 58 D-Index. The last bar groups every scientist with 127 D-Index or more. The highlighted bar, 75 D-Index, is where this scientist sits. 40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 112 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 123 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 94 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 75 D-Index — 73rd percentile

73% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

View D-Index distribution as a table
Number of Microbiology scientists by D-index, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
D-Index Scientists This scientist
40 30
41 86
42 90
43 117
44 122
45 123
46 108
47 110
48 106
49 109
50 129
51 111
52 116
53 127
54 134
55 134
56 112
57 136
58 162
59 151
60 139
61 123
62 126
63 144
64 109
65 103
66 124
67 112
68 103
69 131
70 94
71 93
72 96
73 92
74 80
75 66 75
76 87
77 60
78 73
79 59
80 57
81 55
82 47
83 77
84 50
85 45
86 42
87 41
88 32
89 38
90 35
91 34
92 27
93 26
94 33
95 22
96 37
97 22
98 21
99 22
100 30
101 16
102 20
103 17
104 19
105 16
106 19
107 18
108 14
109 10
110 9
111 7
112 11
113 6
114 15
115 10
116 12
117 7
118 10
119 10
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
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Overview

Hiroshi Ushijima is affiliated with Nihon University in Japan and has contributed extensively to the fields of medicine and agricultural and biological sciences, with a particular focus on infectious diseases and animal science. Their research spans multiple key subfields, including infectious diseases, animal science and zoology, cardiology and cardiovascular medicine, epidemiology, and genetics.

The scientist's main areas of study cover viral gastroenteritis research and epidemiology, animal virus infections, viral infections and immunology, virus-based gene therapy research, respiratory viral infections, hepatitis viruses, and SARS-CoV-2 and COVID-19 research.

Ushijima's recent publications reflect a consistent engagement with viral infections and epidemiological studies. Notable papers include:

  • Genome-wide analyses of human noroviruses provide insights on evolutionary dynamics and evidence of coexisting viral populations evolving under recombination constraints (2021, PLoS Pathogens)
  • Reverse Genetics Approach for Developing Rotavirus Vaccine Candidates Carrying VP4 and VP7 Genes Cloned from Clinical Isolates of Human Rotavirus (2020, Journal of Virology)
  • Distribution of rotavirus genotypes in Japan from 2015 to 2018: Diversity in genotypes before and after introduction of rotavirus vaccines (2020, Vaccine)
  • Genetic recombination and diversity of sapovirus in pediatric patients with acute gastroenteritis in Thailand, 2010-2018 (2020, PeerJ)
  • Molecular and epidemiological trends of human bocavirus and adenovirus in children with acute gastroenteritis in Bangladesh during 2015 to 2019 (2020, Journal of Medical Virology)

Ushijima has frequently published in several scientific venues, including:

  • Journal of Medical Virology (14 publications)
  • Journal of Infection and Public Health (8 publications)
  • Microbiology Spectrum (6 publications)
  • International Journal of Molecular Sciences (5 publications)
  • Journal of Infection and Chemotherapy (4 publications)

Collaboration is a notable component of Ushijima's research activity, with frequent coauthors including Pattara Khamrin, Shoko Okitsu, Niwat Maneekarn, Satoshi Hayakawa, and Kattareeya Kumthip. These partnerships highlight a network of researchers focused on viral and infectious disease studies.

Overall, Ushijima's work concentrates heavily on viral gastroenteritis, virus-based therapies, and epidemiological trends in viral infections. Their contribution reflects sustained research output over recent years within both basic and applied medical sciences related to viral pathogens.

Best Publications

  • Global and regional molecular epidemiology of HIV-1, 1990–2015: a systematic review, global survey, and trend analysis

    Joris Hemelaar;Ramyiadarsini Elangovan;Jason Yun;Leslie Dickson-Tetteh

  • Detection of norovirus (GI, GII), Sapovirus and astrovirus in fecal samples using reverse transcription single-round multiplex PCR

    Hainian Yan;Fumihiro Yagyu;Shoko Okitsu;Osamu Nishio

  • Biofabrication of biosilica-glass by living organisms

    Heinz C. Schröder;Xiaohong Wang;Wolfgang Tremel;Hiroshi Ushijima

  • gp120 of HIV-1 induces apoptosis in rat cortical cell cultures: prevention by memantine.

    Werner E.G. Müller;Heinz C. Schröder;Hiroshi Ushijima;Jutta Dapper

  • Innate Immune Defense of the Sponge Suberites domuncula against Bacteria Involves a MyD88-dependent Signaling Pathway: INDUCTION OF A PERFORIN-LIKE MOLECULE

    Matthias Wiens;Michael Korzhev;Anatoli Krasko;Narsinh L. Thakur

  • Characterization of cell-surface determinants important for baculovirus infection.

    Hideki Tani;Masahiro Nishijima;Hiroshi Ushijima;Tatsuo Miyamura

  • Genetic diversity of norovirus and sapovirus in hospitalized infants with sporadic cases of acute gastroenteritis in Chiang Mai, Thailand

    Grant S. Hansman;Kazuhiko Katayama;Niwat Maneekarn;Supatra Peerakome

  • Cytoprotective effect of NMDA receptor antagonists on prion protein (PrionSc)-induced toxicity in rat cortical cell cultures.

    Werner E.G. Müller;Hiroshi Ushijima;Heinz C. Schröder;Jock M.S. Forrest

  • Genotype C of hepatitis B virus can be classified into at least two subgroups.

    Tran Thien-Tuan Huy;Hiroshi Ushijima;Vo Xuan Quang;Khin Maung Win

  • Street children in Pakistan: a situational analysis of social conditions and nutritional status.

    Moazzam Ali;Saqib Shahab;Hiroshi Ushijima;Aime de Muynck

  • Genetic heterogeneity, evolution, and recombination in noroviruses

    Tung Gia Phan;Kunio Kaneshi;Yuichi Ueda;Shigekazu Nakaya

  • Detection of rotavirus in cerebrospinal fluid and blood of patients with convulsions and gastroenteritis by means of the reverse transcription polymerase chain reaction

    Shuichi Nishimura;Hiroshi Ushijima;Satoshi Nishimura;Hiroaki Shiraishi

  • The role of biosilica in the osteoprotegerin/RANKL ratio in human osteoblast-like cells

    Matthias Wiens;Xiaohong Wang;Heinz C. Schröder;Ute Kolb

  • Diversity of viruses associated with acute gastroenteritis in children hospitalized with diarrhea in Ho Chi Minh City, Vietnam.

    Tuan Anh Nguyen;Tuan Anh Nguyen;Fumihiro Yagyu;Michio Okame;Tung Gia Phan

  • Co-expression and Functional Interaction of Silicatein with Galectin MATRIX-GUIDED FORMATION OF SILICEOUS SPICULES IN THE MARINE DEMOSPONGE SUBERITES DOMUNCULA

    Heinz C. Schröder;Alexandra Boreiko;Michael Korzhev;Muhammad N. Tahir

  • Isolation and Molecular Characterization of Aichi Viruses from Fecal Specimens Collected in Japan, Bangladesh, Thailand, and Vietnam

    Ngan Thi Kim Pham;Pattara Khamrin;Tuan Anh Nguyen;Dey Shuvra Kanti

  • Novel porcine rotavirus of genotype P[27] shares new phylogenetic lineage with G2 porcine rotavirus strain.

    Pattara Khamrin;Niwat Maneekarn;Supatra Peerakome;Wisoot Chan-it

  • Existence of multiple outbreaks of viral gastroenteritis among infants in a day care center in Japan.

    S. Akihara;T. G. Phan;T. A. Nguyen;G. Hansman

  • Changing distribution of norovirus genotypes and genetic analysis of recombinant GIIb among infants and children with diarrhea in Japan.

    Tung Gia Phan;Toshimasa Kuroiwa;Kunio Kaneshi;Yuichi Ueda

  • Osteogenic Potential of Biosilica on Human Osteoblast-Like (SaOS-2) Cells

    Matthias Wiens;Xiaohong Wang;Ute Schlossmacher;Ingo Lieberwirth

  • Infantile convulsions with mild gastroenteritis

    Toshiaki Abe;Masaaki Kobayashi;Kazuko Araki;Hiroko Kodama

Frequent Co-Authors

Shoko Okitsu
Shoko Okitsu Nihon University
Niwat Maneekarn
Niwat Maneekarn Chiang Mai University
Werner E. G. Müller
Werner E. G. Müller Johannes Gutenberg University of Mainz
Heinz C. Schröder
Heinz C. Schröder Johannes Gutenberg University of Mainz
Hiroyuki Shimizu
Hiroyuki Shimizu National Institutes of Health
Grant S. Hansman
Grant S. Hansman Griffith University
Shigeru Morikawa
Shigeru Morikawa National Institutes of Health
Tetsutaro Sata
Tetsutaro Sata National Institute of Infectious Diseases
Tung Gia Phan
Tung Gia Phan University of Pittsburgh
Kazuhiko Katayama
Kazuhiko Katayama Kitasato University

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