Masaaki Kitajima

13.5k total citations · 4 hit papers
154 papers, 8.9k citations indexed

About

Masaaki Kitajima is a scholar working on Infectious Diseases, Biomedical Engineering and Epidemiology. According to data from OpenAlex, Masaaki Kitajima has authored 154 papers receiving a total of 8.9k indexed citations (citations by other indexed papers that have themselves been cited), including 126 papers in Infectious Diseases, 32 papers in Biomedical Engineering and 22 papers in Epidemiology. Recurrent topics in Masaaki Kitajima's work include Viral gastroenteritis research and epidemiology (83 papers), SARS-CoV-2 detection and testing (59 papers) and Biosensors and Analytical Detection (31 papers). Masaaki Kitajima is often cited by papers focused on Viral gastroenteritis research and epidemiology (83 papers), SARS-CoV-2 detection and testing (59 papers) and Biosensors and Analytical Detection (31 papers). Masaaki Kitajima collaborates with scholars based in Japan, United States and Australia. Masaaki Kitajima's co-authors include Eiji Haramoto, Charles P. Gerba, Hiroyuki Katayama, Warish Ahmed, Kyle Bibby, Jason R. Torrey, Aaron Bivins, Akihiko Hata, Stuart L. Simpson and Ian L. Pepper and has published in prestigious journals such as Environmental Science & Technology, The Science of The Total Environment and Applied and Environmental Microbiology.

In The Last Decade

Masaaki Kitajima

146 papers receiving 8.8k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

First confirmed detection of SARS-CoV-2 in untreated wastewater in Australia: A proof of concept for the wastewater surveillance of COVID-19 in the community

2020 1.3k citations Warish Ahmed, Kyle Bibby et al. The Science of The Total Environment profile →
SARS-CoV-2 in wastewater: State of the knowledge and research needs

2020 556 citations Masaaki Kitajima, Warish Ahmed et al. The Science of The Total Environment profile →
First environmental surveillance for the presence of SARS-CoV-2 RNA in wastewater and river water in Japan

2020 440 citations Eiji Haramoto, Masaaki Kitajima et al. The Science of The Total Environment profile →
A review on recent progress in the detection methods and prevalence of human enteric viruses in water

2018 328 citations Eiji Haramoto, Masaaki Kitajima et al. Water Research profile →

Peers

Masaaki Kitajima

WST

RNMI

Eiji Haramoto Japan

Glòria Sánchez Spain

Warish Ahmed Australia

Krista R. Wigginton United States

Gertjan Medema Netherlands

Sharon L. Roy United States

Daisuke Sano Japan

Charles N. Haas United States

Albert Bosch Spain

Vincent R. Hill United States

Eiji Haramoto Japan

Masaaki Kitajima

4.8k ×0.7

1.5k ×0.6

1.1k ×1.0

WST

635 ×0.7

386 ×0.5

RNMI

Citations per year, relative to Masaaki Kitajima Masaaki Kitajima (= 1×) peers Eiji Haramoto

Countries citing papers authored by Masaaki Kitajima

Since Specialization

Citations

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

Fields of papers citing papers by Masaaki Kitajima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Masaaki Kitajima

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

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Abbaszadegan, Morteza, Absar Alum, Masaaki Kitajima, et al.. (2025). Water Reuse—Retrospective Study on Sustainable Future Prospects. Water. 17(6). 789–789. 3 indexed citations

Cảnh, Vũ Đức, et al.. (2025). Revealing the Epidemiology of Human Bocavirus and Streptococcus pneumoniae through Wastewater Surveillance. ACS ES&T Water. 5(11). 6473–6478.

Endo, Noriko, Masaaki Kitajima, Makoto Yasojima, et al.. (2024). Enabling quantitative comparison of wastewater surveillance data across methods through data standardization without method standardization. The Science of The Total Environment. 953. 176073–176073. 5 indexed citations

Murakami, Michio, Yoshitaka Nishikawa, & Masaaki Kitajima. (2024). Analysis of research fields involving wastewater-based epidemiology and interdisciplinary spillovers using a structural topic model. Results in Chemistry. 12. 101897–101897.

Yoo, Byung‐Kwang, et al.. (2024). Willingness to pay for nationwide wastewater surveillance system for infectious diseases in Japan. Environmental Science Water Research & Technology. 11(1). 29–38. 5 indexed citations

Murakami, Michio, et al.. (2023). Wastewater-based prediction of COVID-19 cases using a highly sensitive SARS-CoV-2 RNA detection method combined with mathematical modeling. Environment International. 173. 107743–107743. 46 indexed citations

Murakami, Michio, Wataru Naito, Masashi Kamo, et al.. (2023). COVID-19 infection risk assessment and management at the Tokyo 2020 Olympic and Paralympic Games: A scoping review. Journal of Infection and Public Health. 17. 18–26. 3 indexed citations

Jiang, Guangming, Jennifer Weidhaas, Xuan Li, et al.. (2022). Artificial neural network-based estimation of COVID-19 case numbers and effective reproduction rate using wastewater-based epidemiology. Water Research. 218. 118451–118451. 63 indexed citations

Sherchan, Samendra P., Shalina Shahin, Lauren Ward, et al.. (2020). First detection of SARS-CoV-2 RNA in wastewater in North America: A study in Louisiana, USA. The Science of The Total Environment. 743. 140621–140621. 381 indexed citations

10.

Zhu, Yifan, et al.. (2020). The Effect of GD1a Ganglioside-Expressing Bacterial Strains on Murine Norovirus Infectivity. Molecules. 25(18). 4084–4084. 4 indexed citations

11.

Ahmed, Warish, Aaron Bivins, Paul M. Bertsch, et al.. (2020). Intraday variability of indicator and pathogenic viruses in 1-h and 24-h composite wastewater samples: Implications for wastewater-based epidemiology. Environmental Research. 193. 110531–110531. 75 indexed citations

12.

Ahmed, Warish, Aaron Bivins, Paul M. Bertsch, et al.. (2020). Surveillance of SARS-CoV-2 RNA in wastewater: Methods optimization and quality control are crucial for generating reliable public health information. Current Opinion in Environmental Science & Health. 17. 82–93. 129 indexed citations

13.

Shrestha, Rajani Ghaju, Samendra P. Sherchan, Masaaki Kitajima, et al.. (2019). Reduction of Arcobacter at Two Conventional Wastewater Treatment Plants in Southern Arizona, USA. Pathogens. 8(4). 175–175. 17 indexed citations

14.

Kitajima, Masaaki, Andri Taruna Rachmadi, Brandon C. Iker, Eiji Haramoto, & Charles P. Gerba. (2018). Temporal variations in genotype distribution of human sapoviruses and Aichi virus 1 in wastewater in Southern Arizona, United States. Journal of Applied Microbiology. 124(5). 1324–1332. 28 indexed citations

15.

Sassi, Hannah P., et al.. (2018). Persistence of Viruses by qPCR Downstream of Three Effluent-Dominated Rivers in the Western United States. Food and Environmental Virology. 10(3). 297–304. 20 indexed citations

16.

Goh, Shin Giek, Nazanin Saeidi, Xiaoqiong Gu, et al.. (2018). Occurrence of microbial indicators, pathogenic bacteria and viruses in tropical surface waters subject to contrasting land use. Water Research. 150. 200–215. 44 indexed citations

17.

Rachmadi, Andri Taruna, Jason R. Torrey, & Masaaki Kitajima. (2016). Human polyomavirus: Advantages and limitations as a human-specific viral marker in aquatic environments. Water Research. 105. 456–469. 49 indexed citations

18.

Kitajima, Masaaki, Andri Taruna Rachmadi, Brandon C. Iker, et al.. (2015). Occurrence and genetic diversity of human cosavirus in influent and effluent of wastewater treatment plants in Arizona, United States. Archives of Virology. 160(7). 1775–1779. 21 indexed citations

19.

Rachmadi, Andri Taruna, Masaaki Kitajima, Ian L. Pepper, & Charles P. Gerba. (2015). Enteric and indicator virus removal by surface flow wetlands. The Science of The Total Environment. 542(Pt A). 976–982. 45 indexed citations

20.

Shimizu, Yuko, Hiroshi Ushijima, Masaaki Kitajima, Hiroyuki Katayama, & Yukinobu Tohya. (2009). . Japanese Journal of Infection Prevention and Control. 24(6). 388–394. 2 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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