Postgraduate student, Shusuke Araki (M1) won the Excellent Presentation Award at WET2025 held in Nagaoka city on July 5th and 6th. Congratulations!

At WET2025 (Water and Environment Technology Conference) to be held at City Hall Plaza Aore Nagaoka on 5-6 July, researchers and graduate students supervised by Project Prof. Masaaki Kitajima and Project Prof. Hiroyuki Katayama will give presentations as follows.

A paper with Project Prof. Masaaki Kitajima is the last author and conducted in collaboration with Waseda University, Kanagawa University of Human Services, and others, has been published in Sci. Total Environ. A press release in Japanese was issued by School of Engineering.

Byung-Kwang Yoo, Ryo Iwamoto, Ungil Chung, Tomoko Sasaki, Peter G. Szilagyi, Masaaki Kitajima (2025) Economic evaluation of the city-level warning system based on surveillance at wastewater treatment plants to recommend optimal clinical COVID-19 screening tests at long-term care facilities, Japan, Science of The Total Environment, 990, 179645.
https://doi.org/10.1016/j.scitotenv.2025.179645　Online Jun 18/Booklet Aug 15

At WaterMicro2025 (June 15-20, Netherlands), hosted by the IWA Specialist Group Health-related Water Microbiology, Project Prof. Masaaki Kitajima will be session chair and give an oral presentation and Project Assoc. Prof. Ryota Gomi will give a poster presentation. Also, there is a presentation where Dr. Vu Duc Canh is an co-author.

● Ryota Gomi, Fumie Adachi："Genetic contexts of plasmid-mediated quinolone resistance genes in environmental Escherichia coli", Poster 2C-3.
● Shotaro Torii, Vu Duc Canh, Shin Takahashi, Michinobu Kuwae, Masaaki Kitajima, Michio Murakami： "Usefulness of Sediment Core Samples as a Naturally Preserved Biobank Reflecting the Historical Emission of Health-Related Microorganisms", Poster 3C-14.
● Shotaro Torii, Masaaki Kitajima, Kumiko Oguma, Hiroyuki Katayama："Simultaneous detection of protozoa, bacteria and viruses in tap and river waters by membrane adsorption and direct nucleic acid extraction", Poster 3C-15.
● Masaaki Kitajima, Michio Murakami, Hiroki Ando, Ryo Yamaguchi："Evaluating technical requirements in wastewater-based epidemiological surveillance for accurate COVID-19 incidence estimation", Oral 4B-5.

Dr. Nao Yamamoto from New York University joined the Laboratory of International Wastewater-based Epidemiology as a visiting researcher on June 1st.

Dr. Nao Yamamoto is a Postdoctoral Fellow at New York University, Grossman School of Medicine. She received her PhD in Applied Mathematics for Life and Social Sciences from Arizona State University in 2023. Her research focuses on applying network science and mathematical modeling to improve the predictability of infectious disease dynamics. She is broadly interested in interdisciplinary and intercultural approaches to public health research that integrate quantitative methods with real-world complexity.

Project Prof. Masaaki Kitajima appeared on Senator Hiroaki Shiota's YouTube channel and had a discussion. Senator Shiota is the chair of the Komeito Party's project team for promoting wastewater surveillance (epidemiological surveys), and in the video he spoke about his calls for the expansion of wastewater surveillance in the Diet.

Project Prof. Masaaki Kitajima (International Wastewater-based Epidemiology) will give an invited lecture at Symposium 5(PDF) "Current Status and Future Challenges of Microbial Monitoring" at the 98th Annual Meeting of Japanese Society for Bacteriology to be held in Kanazawa City from May 29th to 31st.

Wastewater-based Epidemiology: New Research Developments in the Post-COVID Era, 第98回日本細菌学会総会, May 29, 石川県立音楽堂.

A paper by Project Prof. Masaaki Kitajima (International Wastewater-based Epidemiology) on the development of virus concentration from wastewater using a coagulant with magnetic materials has been published online by ACS ES&T Water. This is a joint research project with Shionogi & Co. Ltd./AdvanSentinel Inc. and Hokkaido University.

Ryo Iwamoto, Satoshi Okabe, and Masaaki Kitajima (2025) Development of a Rapid, Cost-Effective, and Automatable Virus Concentration from Wastewater Using a Coagulant with Magnetic Materials, ACS ES&T Water. https://doi.org/10.1021/acsestwater.5c00027

Research on the Tanaka Project* of the JST-Mirai-Program was featured in the May issue of JSTnews. Project Prof. Hiroaki Tanaka of Shinshu University (Project Leader) and Project Prof. Masaaki Kitajima (One of the Collaborators) were interviewed. The research overview of the whole project and Project Prof. Kitajima's research were covered. (Image: Courtesy of JSTnews)

田中宏明・北島正章 (2025) 特集１: 安全安心に管理できる水インフラの概念実証 健康リスクを低減する社会の実現を目指して, JSTnews 5月号, pp.3-7.

* Tanaka Project
Mission area：Most Safe and Secure Society in the world
Prioritized Themes：Realization of a safe, secure, and comfortable town free from hazardous substances hiding in the living environment
Project：Realization of Safe and Secured Water Cycle System Supporting Healthy Society and People

At the 14th Pediatric Respiratory Virus Infection research meeting, to be held online on May 15th, Project Prof. Masaaki Kitajima (International Wastewater-based Epidemiology) will give a special lecture, and a collaborating researcher from the Department of Pediatrics, Niigata University Graduate School of Medical and Dental Sciences will give an oral presentation.

●北島正章 (2025) 下水疫学：患者検体に依存しない病原体サーベイランス [特別講演], 第14回小児呼吸器ウイルス感染症研究会, May 15, WEB配信.
●太刀川潤, 羽深理恵, 相澤悠太, Nur Irma Safitri, 北島正章, 齋藤昭彦 (2025) 新潟市における小児のウイルス感染症に対する下水サーベイランスの取り組み, 第14回小児呼吸器ウイルス感染症研究会, May 15, WEB配信.

A paper on the application of high-sensitivity detection technology of SARS-CoV-2 in wastewater to air has been published in Sci Rep in a joint research project by Project Prof. Masaaki Kitajima, Shionogi & CO., LTD., and other.

Tomoyo Yoshinaga, Yoshinori Ando, Yumi Sato, Takeru Kishida & Masaaki Kitajima (2025) Development of COPMAN-Air method for high-sensitivity detection of SARS-CoV-2 in air, Scientific Reports, 15, 14340. https://doi.org/10.1038/s41598-025-99365-2

Project Prof. Masaaki Kitajima will be taking part in a panel discussion at the public symposium "Challenge Engineering! -Towards 2050 with 'IKIGAI'-" to be held at Muroran Institute of Technology in the afternoon of May 2. The symposium is hosted by the Computer Science Center of the university and co-hosted by the Science, Technology and Innovation 2050 Committee (STI2050) of the Engineering Academy of Japan, with Project Prof. Kitajima serving as the secretary of STI2050.

公開シンポジウム「挑め、工学！ ―"IKIGAI"ある2050年に向けて―」, May 2, 室蘭工業大学大学会館　多目的ホール.

Project Prof. Masaaki Kitajima and researchers from the Department of Pediatrics at Niigata University Graduate School of Medical and Dental Sciences conducted a joint research and made a poster presentation below at the 128th Annual Meeting of the Japanese Pediatric Society, held at Port Messe Nagoya from April 18th to 20th.

●太刀川 潤, 羽深理恵, 相澤悠太, 山中崇之, 樋浦誠, 本間丈成, 大久保総一朗, 遠山潤, 塚野真也, 北島正章, 齋藤昭彦 (2025) 新潟市における下水サーベイランスを用いたパレコウイルス-A感染症流行の把握.
●羽深理恵, 太刀川潤, 相澤悠太, 山中崇之, 塚野真也, 大久保総一朗, 樋浦誠, 小林悠, 遠山潤, 本間丈成, 北島正章, 齋藤昭彦 (2025) 新潟市における下水サーベイランスによる小児呼吸器感染症の流行予測.

Project Prof. Masaaki Kitajima responded to an interview with Kyodo News. Then, the Sankei Shimbun and many local newspapers reported the issue as follows:

●感染症を空港の排水でいち早く把握 国際研究、万博中実施へ 東大ら専門家グループ, 産経新聞, Apr 6.
●《大阪・関西万博　EXPO2025》新型コロナ サル痘 インフル　デング熱 空港排水で感染症検知を 開催期間中に国際研究, 上毛新聞, Apr 7.
●空港排水で感染症把握 東大など万博で実施へ, 福井新聞, Apr 7.
●感染症、空港排水で把握　国際研究、万博中実施へ　東大チーム, 山陰中央新報デジタル, Apr 7.
●EXPO2025＝感染症、空港排水で把握 東大チームなど 国際研究、万博中実施へ, 四国新聞, Apr 7.

Project Prof. Masaaki Kitajima appeared in a YouTube video. He talked with the ITTO Gaienmae Festival Team LH members about when he became interested in wastewater research, why he started researching viruses, and the research he began in earnest during his university days.