Nobuo Koizumi

4.1k total citations
133 papers, 3.0k citations indexed

About

Nobuo Koizumi is a scholar working on Parasitology, Infectious Diseases and Small Animals. According to data from OpenAlex, Nobuo Koizumi has authored 133 papers receiving a total of 3.0k indexed citations (citations by other indexed papers that have themselves been cited), including 97 papers in Parasitology, 42 papers in Infectious Diseases and 25 papers in Small Animals. Recurrent topics in Nobuo Koizumi's work include Leptospirosis research and findings (89 papers), Viral Infections and Vectors (40 papers) and Veterinary medicine and infectious diseases (24 papers). Nobuo Koizumi is often cited by papers focused on Leptospirosis research and findings (89 papers), Viral Infections and Vectors (40 papers) and Veterinary medicine and infectious diseases (24 papers). Nobuo Koizumi collaborates with scholars based in Japan, United States and Sri Lanka. Nobuo Koizumi's co-authors include Haruo Watanabe, Makoto Ohnishi, Ryoichi Sato, Morikazu Imamura, Hidenori Iwahana, Maki Muto, Tomoyuki Kadotani, Katsuro Yaoi, Hirohisa Watanabe and Takao Toyokawa and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Nature Communications and SHILAP Revista de lepidopterología.

In The Last Decade

Nobuo Koizumi

126 papers receiving 2.9k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Nobuo Koizumi Japan 30 1.8k 922 435 412 405 133 3.0k
D.L. Emery Australia 34 1.3k 0.7× 664 0.7× 484 1.1× 321 0.8× 1.3k 3.3× 143 3.3k
Horst Zahner Germany 29 1.3k 0.7× 887 1.0× 305 0.7× 261 0.6× 852 2.1× 155 2.9k
Reinhard K. Straubinger Germany 35 2.0k 1.1× 2.1k 2.2× 593 1.4× 306 0.7× 232 0.6× 140 3.7k
John F. Huntley United Kingdom 36 1.1k 0.6× 714 0.8× 870 2.0× 704 1.7× 1.4k 3.6× 119 4.2k
Stephen K. Wikel United States 32 2.5k 1.4× 1.4k 1.5× 638 1.5× 328 0.8× 98 0.2× 52 3.2k
Hideto Fukushi Japan 37 1.3k 0.7× 1.0k 1.1× 406 0.9× 498 1.2× 120 0.3× 200 4.7k
Jürgen Krücken Germany 36 2.0k 1.1× 1.2k 1.3× 255 0.6× 351 0.9× 1.2k 2.9× 156 3.5k
Ana Oleaga Spain 28 1.5k 0.8× 538 0.6× 211 0.5× 293 0.7× 431 1.1× 81 2.2k
Pilar Alberdi Spain 29 1.4k 0.8× 991 1.1× 287 0.7× 216 0.5× 62 0.2× 68 2.0k
Elizabeth Glass United Kingdom 38 1.1k 0.6× 665 0.7× 1.5k 3.5× 708 1.7× 343 0.8× 148 4.3k

Countries citing papers authored by Nobuo Koizumi

Since Specialization
Citations

This map shows the geographic impact of Nobuo Koizumi's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Nobuo Koizumi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Nobuo Koizumi more than expected).

Fields of papers citing papers by Nobuo Koizumi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Nobuo Koizumi. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Nobuo Koizumi. The network helps show where Nobuo Koizumi may publish in the future.

Co-authorship network of co-authors of Nobuo Koizumi

This figure shows the co-authorship network connecting the top 25 collaborators of Nobuo Koizumi. A scholar is included among the top collaborators of Nobuo Koizumi based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Nobuo Koizumi. Nobuo Koizumi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Miura, Kozue, et al.. (2024). Coinfection with Orthohantavirus and Leptospira spp. in Rats Collected from Markets in Indonesia. Vector-Borne and Zoonotic Diseases. 25(1). 43–48. 1 indexed citations
2.
Suzuki, Ryo, et al.. (2024). Bacteriological and Serological Investigation of Leptospirosis in Dogs and Pigs in Palau. American Journal of Tropical Medicine and Hygiene. 111(2). 246–250. 1 indexed citations
3.
Koizumi, Nobuo, et al.. (2023). Effects of Diazinon Exposure on Urinary Shedding of Leptospira interrogans Serogroup Hebdomadis in Mice. Toxics. 11(4). 361–361. 1 indexed citations
4.
Nakamura, Shuichi, et al.. (2023). Analysis of Adhesion and Surface Motility of a Spirochete Bacterium. Methods in molecular biology. 2646. 159–168. 1 indexed citations
5.
Dharmayanti, Ni Luh Putu Indi, et al.. (2022). Serological Surveillance of Zoonotic Pathogens in Rats in Markets in Bogor, Indonesia. Vector-Borne and Zoonotic Diseases. 22(11). 568–570.
6.
Koizumi, Nobuo, et al.. (2022). Carrier Status of Leptospira spp. in Healthy Companion Dogs in Sri Lanka. Vector-Borne and Zoonotic Diseases. 22(2). 93–100. 7 indexed citations
7.
Yasuda, Ikkoh, Nobuo Saito, Motoi Suzuki, et al.. (2021). Unique characteristics of new complete blood count parameters, the Immature Platelet Fraction and the Immature Platelet Fraction Count, in dengue patients. PLoS ONE. 16(11). e0258936–e0258936. 2 indexed citations
8.
Kakita, Tetsuya, et al.. (2021). Laboratory diagnostic, epidemiological, and clinical characteristics of human leptospirosis in Okinawa Prefecture, Japan, 2003–2020. PLoS neglected tropical diseases. 15(12). e0009993–e0009993. 12 indexed citations
9.
Mukadi, Patrick, Elisabeth Pukuta-Simbu, Luigi Palla, et al.. (2021). Leptospirosis as a cause of fever associated with jaundice in the Democratic Republic of the Congo. PLoS neglected tropical diseases. 15(8). e0009670–e0009670. 10 indexed citations
10.
Shimizu, Kenta, Nobuo Koizumi, Tomonori Kawakami, et al.. (2021). Identification of Novel Rodent-Borne Orthohantaviruses in an Endemic Area of Chronic Kidney Disease of Unknown Etiology (CKDu) in Sri Lanka. Viruses. 13(10). 1984–1984. 6 indexed citations
11.
Koizumi, Nobuo, Hidemasa Izumiya, & Makoto Ohnishi. (2020). Genetic relatedness of Leptospira interrogans serogroup Autumnalis isolated from humans, dogs, and mice in Japan. BMC Research Notes. 13(1). 369–369. 8 indexed citations
12.
Karunanayake, Lilani, Chandika D. Gamage, Hidemasa Izumiya, et al.. (2020). Multilocus sequence typing reveals diverse known and novel genotypes of Leptospira spp. circulating in Sri Lanka. PLoS neglected tropical diseases. 14(8). e0008573–e0008573. 6 indexed citations
13.
Kakita, Tetsuya, et al.. (2020). Novel genotypes of Leptospira interrogans serogroup Sejroe isolated from human patients in Okinawa Prefecture, Japan. Journal of Medical Microbiology. 69(4). 587–590. 2 indexed citations
14.
Koizumi, Nobuo, Kozue Miura, Taichiro Takemura, et al.. (2019). Molecular epidemiology of Leptospira interrogans in Rattus norvegicus in Hanoi, Vietnam. Acta Tropica. 194. 204–208. 14 indexed citations
15.
Kasuga, Kie, et al.. (2018). The mechanism of two-phase motility in the spirochete Leptospira : Swimming and crawling. Science Advances. 4(5). eaar7975–eaar7975. 27 indexed citations
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18.
Villanueva, Sharon Y. A. M., Yasutake Yanagihara, Maki Muto, et al.. (2010). Serologic and Molecular Studies of Leptospira and Leptospirosis among Rats in the Philippines. American Journal of Tropical Medicine and Hygiene. 82(5). 889–898. 77 indexed citations
19.
Koizumi, Nobuo, Maki Muto, Seigo Yamamoto, et al.. (2008). Investigation of Reservoir Animals of <i>Leptospira</i> in the Northern Part of Miyazaki Prefecture. Japanese Journal of Infectious Diseases. 61(6). 465–468. 40 indexed citations
20.
Wangroongsarb, Piyada, et al.. (2005). Applicability of Polymerase Chain Reaction to Diagnosis of Leptospirosis. 28(2). 43–47. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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