Koichi Izumikawa

8.6k total citations
353 papers, 4.8k citations indexed

About

Koichi Izumikawa is a scholar working on Epidemiology, Infectious Diseases and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Koichi Izumikawa has authored 353 papers receiving a total of 4.8k indexed citations (citations by other indexed papers that have themselves been cited), including 197 papers in Epidemiology, 181 papers in Infectious Diseases and 56 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Koichi Izumikawa's work include Antifungal resistance and susceptibility (111 papers), Pneumonia and Respiratory Infections (76 papers) and Fungal Infections and Studies (67 papers). Koichi Izumikawa is often cited by papers focused on Antifungal resistance and susceptibility (111 papers), Pneumonia and Respiratory Infections (76 papers) and Fungal Infections and Studies (67 papers). Koichi Izumikawa collaborates with scholars based in Japan, United States and United Kingdom. Koichi Izumikawa's co-authors include Shigeru Kohno, Katsunori Yanagihara, Hiroshi Kakeya, Taiga Miyazaki, Takahiro Takazono, Yoshihiro Yamamoto, Yoshitsugu Miyazaki, Shigeki Nakamura, Yoshitomo Morinaga and Yoshifumi Imamura and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and Clinical Infectious Diseases.

In The Last Decade

Koichi Izumikawa

328 papers receiving 4.7k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Koichi Izumikawa Japan	35	2.5k	2.4k	803	704	566	353	4.8k
Robert Krause Austria	41	3.0k 1.2×	3.2k 1.3×	647 0.8×	539 0.8×	309 0.5×	164	5.4k
Jeffrey J. Tarrand United States	44	3.6k 1.4×	3.0k 1.3×	974 1.2×	497 0.7×	362 0.6×	135	6.6k
Ronen Ben‐Ami Israel	36	2.6k 1.0×	2.8k 1.2×	620 0.8×	369 0.5×	1.1k 1.9×	158	5.4k
Hiroshi Kakeya Japan	31	1.9k 0.8×	1.9k 0.8×	669 0.8×	435 0.6×	327 0.6×	253	3.5k
James I. Ito United States	28	2.4k 1.0×	2.0k 0.9×	413 0.5×	382 0.5×	268 0.5×	57	5.4k
Jorge Garbino Switzerland	32	3.0k 1.2×	2.7k 1.1×	369 0.5×	432 0.6×	422 0.7×	75	4.9k
Susan Whittier United States	41	1.5k 0.6×	1.9k 0.8×	820 1.0×	465 0.7×	973 1.7×	118	4.7k
Kwen‐Tay Luh Taiwan	48	2.0k 0.8×	1.8k 0.8×	1.3k 1.6×	1.2k 1.6×	1.1k 1.9×	149	6.0k
Katsunori Yanagihara Japan	43	3.0k 1.2×	2.6k 1.1×	1.7k 2.2×	920 1.3×	847 1.5×	470	7.3k
Phyllis Della‐Latta United States	46	1.8k 0.7×	2.4k 1.0×	606 0.8×	395 0.6×	723 1.3×	119	5.2k

Countries citing papers authored by Koichi Izumikawa

Since Specialization

Citations

This map shows the geographic impact of Koichi Izumikawa'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 Koichi Izumikawa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Koichi Izumikawa more than expected).

Fields of papers citing papers by Koichi Izumikawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Koichi Izumikawa. 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 Koichi Izumikawa. The network helps show where Koichi Izumikawa may publish in the future.

Co-authorship network of co-authors of Koichi Izumikawa

This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Izumikawa. A scholar is included among the top collaborators of Koichi Izumikawa 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 Koichi Izumikawa. Koichi Izumikawa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Iwanaga, Naoki, Tatsuro Hirayama, Masataka Yoshida, et al.. (2025). Prevotella intermedia Synergistically Exacerbates Pneumonia Induced by Oral Streptococci. The Journal of Infectious Diseases. 232(2). e280–e289.

Saijo, Masayuki, Koichi Izumikawa, Koichiro Suemori, et al.. (2025). Efficacy of favipiravir treatment for patients with severe fever with thrombocytopenia syndrome assessed with a historical control. Antimicrobial Agents and Chemotherapy. 69(12). e0106225–e0106225.

Hirayama, Tatsuro, Taiga Miyazaki, Rina Tanaka, et al.. (2024). TAC1b mutation in Candida auris decreases manogepix susceptibility owing to increased CDR1 expression. Antimicrobial Agents and Chemotherapy. 69(2). e0150824–e0150824. 4 indexed citations

Takazono, Takahiro, Masato Tashiro, Shotaro Ide, et al.. (2024). Antifungal Treatment for Japanese Patients with Chronic Pulmonary Aspergillosis. Infectious Diseases and Therapy. 14(1). 245–259. 1 indexed citations

Takazono, Takahiro, Shimpei Morimoto, Yuya Ito, et al.. (2023). The prognostic factors for cryptococcal meningitis in non‐human immunodeficiency virus patients: An observational study using nationwide database. Mycoses. 67(1). e13658–e13658. 7 indexed citations

Iwanaga, Naoki, Yuya Ito, Nobuyuki Ashizawa, et al.. (2023). Pulmonary Coccidioidomycosis Complicated by Nontuberculous Mycobacterial Pulmonary Diseases with a Literature Review. Japanese Journal of Infectious Diseases. 76(5). 314–318. 1 indexed citations

Takazono, Takahiro, et al.. (2023). Pathogenesis, Treatment Approaches and Challenges of Drug Resistance in Chronic Pulmonary Aspergillosis. Kansenshogaku zasshi. 97(3). 75–89. 1 indexed citations

Kaku, Norihito, et al.. (2023). Gargle sample is an effective option in a novel fully automated molecular point-of-care test for influenza: a multicenter study. Virology Journal. 20(1). 41–41. 2 indexed citations

Miyazaki, Taiga, Michiyo Okamoto, Tatsuro Hirayama, et al.. (2023). Evaluation of a Novel FKS1 R1354H Mutation Associated with Caspofungin Resistance in Candida auris Using the CRISPR-Cas9 System. Journal of Fungi. 9(5). 529–529. 15 indexed citations

10.

Kido, Takashi, Noriho Sakamoto, Atsuko Hara, et al.. (2022). Novel SPEF2 Variant in a Japanese Patient with Primary Ciliary Dyskinesia: A Case Report and Literature Review. Journal of Clinical Medicine. 12(1). 317–317. 3 indexed citations

11.

Takazono, Takahiro, Shimpei Morimoto, Masato Tashiro, et al.. (2022). Comparison of liposomal amphotericin B alone and in combination with flucytosine in the treatment of non‐HIV Cryptococcal meningitis: A nationwide observational study. Mycoses. 65(9). 897–902. 3 indexed citations

12.

Tashiro, Masato, et al.. (2020). Characteristics of azole-resistant Aspergillus fumigatus attached to agricultural products imported to Japan. Journal of Infection and Chemotherapy. 26(10). 1021–1025. 25 indexed citations

13.

Takazono, Takahiro, Tomomi Saijo, Nobuyuki Ashizawa, et al.. (2019). Clinical features and cause analysis of false positive results of Aspergillus galactomannan assay in pulmonary cryptococcosis patients. European Journal of Clinical Microbiology & Infectious Diseases. 38(4). 735–741. 11 indexed citations

14.

Miyazaki, Taiga, Shintaro Shimamura, Hironobu Nakayama, et al.. (2017). Unexpected effects of azole transporter inhibitors on antifungal susceptibility in Candida glabrata and other pathogenic Candida species. PLoS ONE. 12(7). e0180990–e0180990. 14 indexed citations

15.

Izumikawa, Koichi. (2015). Recent advances in chronic pulmonary aspergillosis. Respiratory Investigation. 54(2). 85–91. 11 indexed citations

16.

Izumikawa, Koichi, Koichi Izumikawa, Takahiro Takazono, et al.. (2013). Clinical features, risk factors and treatment of fulminant Mycoplasma pneumoniae pneumonia: A review of the Japanese literature. Journal of Infection and Chemotherapy. 20(3). 181–185. 74 indexed citations

17.

Mihara, Tomo, Koichi Izumikawa, Hiroshi Kakeya, et al.. (2012). Multilocus sequence typing ofCryptococcus neoformansin non-HIV associated cryptococcosis in Nagasaki, Japan. Medical Mycology. 51(3). 252–260. 41 indexed citations

18.

Izumikawa, Kinichi, Kinichi Izumikawa, Yoshitomo Morinaga, et al.. (2007). Adult Still's disease associated with cytomegalovirus infection. Journal of Infection and Chemotherapy. 13(2). 114–117. 12 indexed citations

19.

Izumikawa, Koichi, Yoshitomo Morinaga, Kinichi Izumikawa, Kohei Hara, & Shigeru Kohno. (2006). A Case of Splenic Abscess during Treatment of Interstitial Pneumonia. Japanese Journal of Infectious Diseases. 59(5). 320–322. 3 indexed citations

20.

Seki, Masafumi, Kohji Hashiguchi, Kosuke Kosai, et al.. (2006). A Patient with Fulminant Primary Influenza Pneumonia Which Developed into Secondary Bacterial Pneumonia. Acta medica Nagasakiensia. 51(4). 121–124. 6 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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