Koo Nagasawa

1.9k citations

34 papers · 349 indexed · h-index 12

Co-authors: Hirokazu Kimura Akihide Ryo Naruhiko Ishiwada Yuki Matsushima Makoto Kuroda Kazuhiko Katayama Haruka Hishiki Takumi Motoya
Topics: Respiratory viral infections research (15 papers)Viral gastroenteritis research and epidemiology (14 papers)Animal Virus Infections Studies (8 papers)
Cited by: Infectious Diseases Animal Science and Zoology Microbiology
Journals: SHILAP Revista de lepidopterologíaPLoS ONE PEDIATRICS
Partner nations: Japan United States France

In The Last Decade

Koo Nagasawa

30 papers receiving 346 citations

Peers

Countries citing papers authored by Koo Nagasawa

Since Specialization

Citations

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

Fields of papers citing papers by Koo Nagasawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koo Nagasawa

This figure shows the co-authorship network connecting the top 25 collaborators of Koo Nagasawa. A scholar is included among the top collaborators of Koo Nagasawa 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 Koo Nagasawa. Koo Nagasawa 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

#	Work	Indexed citations
1	The prebiotic effect of 1-kestose in low-birth-weight neonates taking bifidobacteria: a pilot randomized trial in comparison with lactulose 2024 ·Bioscience of Microbiota Food and Health ·Saori Tanaka,(unknown),(unknown),Koo Nagasawa,(unknown),Hironori Sato,Haruka Hishiki,Naruhiko Ishiwada,Hiromichi Hamada,(unknown),Takumi Tochio,(unknown),(unknown),(unknown),(unknown),Ryo Takemura,(unknown)	0
2	Effectiveness of isavuconazole in invasive cerebral aspergillosis during hematopoietic stem cell transplantation in a pediatric patient with myelodysplastic syndrome: A case report 2024 ·Journal of Infection and Chemotherapy ·(unknown),Moeko Hino,Takahiro Aoki,(unknown),(unknown),Koo Nagasawa,Naruhiko Ishiwada,Akira Watanabe,Shingo Yamazaki,Hiromichi Hamada	0
3	Disease burden of respiratory syncytial virus infection in the pediatric population in Japan 2021 ·Journal of Infection and Chemotherapy ·Koo Nagasawa,Naruhiko Ishiwada	12
4	Whole Genome Analysis Detects the Emergence of a Single Salmonella enterica Serovar Chester Clone in Japan’s Kanto Region 2021 ·Frontiers in Microbiology ·(unknown),Tsuyoshi Sekizuka,Eiji Yokoyama,(unknown),Noriko Konishi,Yuko Matsumoto,Kumiko Ishida,Koo Nagasawa,Nathalie Jourdan‐Da Silva,Motoi Suzuki,Hirokazu Kimura,Simon Le Hello,Koichi Murakami,Makoto Kuroda,Shinichiro Hirai,(unknown)	1
5	Molecular Evolution of the Protease Region in Norovirus Genogroup II 2020 ·Frontiers in Microbiology ·(unknown),Yuki Matsushima,Koo Nagasawa,(unknown),Takeshi Saraya,(unknown),Koichi Murakami,Takumi Motoya,Akihide Ryo,Makoto Kuroda,Kazuhiko Katayama,Hirokazu Kimura	6
6	Molecular Evolution of the Fusion Protein (F) Gene in Human Respirovirus 3 2020 ·Frontiers in Microbiology ·(unknown),Hirokazu Kimura,Haruyuki Ishii,Takeshi Saraya,Daisuke Kurai,Yuki Matsushima,Koo Nagasawa,Akihide Ryo,Hajime Takizawa	7
7	Infectious endocarditis with abdominal pain after shedding of deciduous teeth 2020 ·Pediatrics International ·Yuji Fujita,Haruka Hishiki,Koo Nagasawa,Ryota Ebata,Naoki Shimojo	0
8	Psoitis and multiple venous thromboses caused by Panton Valentine Leukocidin-positive methicillin-sensitive Staphylococcus aureus in a 12-year-old girl: A case report 2019 ·Journal of Infection and Chemotherapy ·Hitoshi Ogata,Koo Nagasawa,Noriko Takeuchi,(unknown),(unknown),Tomotaka Umimura,(unknown),Fumiya Yamaide,(unknown),Tomozumi Takatani,Taiji Nakano,Haruka Hishiki,Naruhiko Ishiwada,Naoki Shimojo	4
9	The Association Between Documentation of Koplik Spots and Laboratory Diagnosis of Measles and Other Rash Diseases in a National Measles Surveillance Program in Japan 2019 ·Frontiers in Microbiology ·Hirokazu Kimura,Komei Shirabe,Makoto Takeda,Miho Kobayashi,Hiroyuki Tsukagoshi,Kaori Okayama,Akihide Ryo,Koo Nagasawa,Nobuhiko Okabe,Hiroko Minagawa,Kunihisa Kozawa	8
10	Molecular evolution of the hemagglutinin-neuraminidase (HN) gene in human respirovirus 3 2019 ·Virus Research ·(unknown),Hirokazu Kimura,Haruyuki Ishii,Takeshi Saraya,Daisuke Kurai,Koo Nagasawa,Yuki Matsushima,Akihide Ryo,Hajime Takizawa	7
11	Microfloral analysis of pediatric respiratory syncytial virus infection, with and without the use of antibiotics 2018 ·The Journal of Antibiotics ·Koo Nagasawa,Kenichi Takeshita,Hatsumi Taniguchi,Hiroshi Suzuki,(unknown),Haruka Hishiki,Tadashi Hoshino,Hirokazu Kimura,Kazuo Suzuki,Naoki Shimojo,Naruhiko Ishiwada	0
12	Detailed genetic analyses of the HN gene in human respirovirus 3 detected in children with acute respiratory illness in the Iwate Prefecture, Japan 2018 ·Infection Genetics and Evolution ·Masaki Takahashi,Koo Nagasawa,Koichi Saito,Shunichi Maisawa,Kiyotaka Fujita,Koichi Murakami,Makoto Kuroda,Akihide Ryo,Hirokazu Kimura	7
13	Molecular Evolutionary Analyses of the RNA-Dependent RNA Polymerase Region in Norovirus Genogroup II 2018 ·Frontiers in Microbiology ·(unknown),Yuki Matsushima,Koo Nagasawa,Takumi Motoya,Akihide Ryo,Makoto Kuroda,Kazuhiko Katayama,Hirokazu Kimura	18
14	Molecular Evolution of the RNA-Dependent RNA Polymerase and Capsid Genes of Human Norovirus Genotype GII.2 in Japan during 2004–2015 2017 ·Frontiers in Microbiology ·Fuminori Mizukoshi,Koo Nagasawa,Yen Hai Doan,Kei Haga,Shima Yoshizumi,Yo Ueki,Michiyo Shinohara,Mariko Ishikawa,Naomi Sakon,Naoki Shigemoto,(unknown),(unknown),Koichi Murakami,Akihide Ryo,Yoshiyuki Suzuki,Kazuhiko Katayama,Hirokazu Kimura	18
15	Molecular Evolution of the VP1 Gene in Human Norovirus GII.4 Variants in 1974–2015 2017 ·Frontiers in Microbiology ·Takumi Motoya,Koo Nagasawa,Yuki Matsushima,Noriko Nagata,Akihide Ryo,Tsuyoshi Sekizuka,Akifumi Yamashita,Makoto Kuroda,Yukio Morita,Yoshiyuki Suzuki,Nobuya Sasaki,Kazuhiko Katayama,Hirokazu Kimura	29
16	Identification of vaccine-derived rotavirus strains in children with acute gastroenteritis in Japan, 2012-2015 2017 ·PLoS ONE ·(unknown),Sayaka Takanashi,Aksara Thongprachum,Nozomu Hanaoka,Tsuguto Fujimoto,Koo Nagasawa,Hirokazu Kimura,Shoko Okitsu,Masashi Mizuguchi,Hiroshi Ushijima	11
17	Molecular evolution of respiratory syncytial virus subgroup A genotype NA1 and ON1 attachment glycoprotein ( G ) gene in central Vietnam 2016 ·Infection Genetics and Evolution ·(unknown),Minh Nhat Le,Koo Nagasawa,Hiroyuki Tsukagoshi,Hien Anh Thi Nguyen,Michiko Toizumi,Hiroyuki Moriuchi,Masahiro Hashizume,Koya Ariyoshi,Duc Anh Dang,Hirokazu Kimura,Lay‐Myint Yoshida	19
18	Molecular evolution of the hypervariable region of the attachment glycoprotein gene in human respiratory syncytial virus subgroup B genotypes BA9 and BA10 2015 ·Infection Genetics and Evolution ·Koo Nagasawa,(unknown),Miho Kobayashi,Akihide Ryo,Kazunori Oishi,Masatsugu Obuchi,Naruhiko Ishiwada,Masahiro Noda,Makoto Kuroda,Naoki Shimojo,Hirokazu Kimura	14
19	The First Case of Invasive Mixed-Mold Infections Due to Emericella nidulans var. echinulata and Rasamsonia piperina in a Patient with Chronic Granulomatous Disease 2015 ·Mycopathologia ·Naruhiko Ishiwada,Kenichi Takeshita,Takashi Yaguchi,Koo Nagasawa,Noriko Takeuchi,Haruka Hishiki,Akira Watanabe,Katsuhiko Kamei,Naoki Shimojo	10
20	The incidence of pediatric invasive Haemophilus influenzae and pneumococcal disease in Chiba prefecture, Japan before and after the introduction of conjugate vaccines 2014 ·Vaccine ·Naruhiko Ishiwada,Haruka Hishiki,Koo Nagasawa,(unknown),Yasunori Sato,Bin Chang,Yuko Sasaki,Kouji Kimura,Makoto Ohnishi,Keigo Shibayama	30

About Koo Nagasawa

Koo Nagasawa is a scholar working on Infectious Diseases, Animal Science and Zoology and Epidemiology, having authored 34 papers that have together received 349 indexed citations. Recurring topics across this work include Respiratory viral infections research (15 papers), Viral gastroenteritis research and epidemiology (14 papers) and Animal Virus Infections Studies (8 papers). The work is most often cited by research in Infectious Diseases (219 citations), Animal Science and Zoology (100 citations) and Microbiology (35 citations). Koo Nagasawa has collaborated with scholars based in Japan, United States and France. Frequent co-authors include Hirokazu Kimura, Akihide Ryo, Naruhiko Ishiwada, Yuki Matsushima, Makoto Kuroda, Kazuhiko Katayama, Haruka Hishiki, Takumi Motoya, Hiroyuki Tsukagoshi and Bin Chang. Their work appears in journals such as SHILAP Revista de lepidopterología, PLoS ONE and PEDIATRICS.

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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