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Volume 31, Number 5—May 2025
Dispatch

Influenza A(H1N1)pdm09 Virus with Reduced Susceptibility to Baloxavir, Japan, 2024

Emi TakashitaComments to Author , Hiroko Morita, Shiho Nagata, Seiichiro Fujisaki, Hideka Miura, Tatsuya Ikeda, Kenichi Komabayashi, Mika Sasaki, Yohei Matoba, Tomoko Takahashi, Naomi Ogawa, Katsumi Mizuta, Sueshi Ito, Noriko Kishida, Kazuya Nakamura, Masayuki Shirakura, Shinji Watanabe, and Hideki Hasegawa
Author affiliation: Author affiliations: National Institute of Infectious Diseases, Tokyo, Japan (E. Takashita, H. Morita, S. Nagata, S. Fujisaki, H. Miura, N. Kishida, K. Nakamura, M. Shirakura, S. Watanabe, H. Hasegawa); Yamagata Prefectural Institute of Public Health, Yamagata, Japan (T. Ikeda, K. Komabayashi, M. Sasaki, Y. Matoba, T. Takahashi, N. Ogawa, K. Mizuta); Ito Clinic, Yamagata (S. Ito)

Main Article

Figure 1

Detection of influenza viruses in Yamagata, Japan, during the 2022–23 and 2023–24 influenza seasons (n = 619). Monthly reports of influenza virus detection by the National Epidemiologic Surveillance of Infectious Diseases (https://www.niid.go.jp/niid/en/survaillance-data-table-english.html) were used for study of influenza A(H1N1)pdm09 virus with reduced susceptibility to baloxavir. Clinical specimens were collected from outpatients who had influenza or influenza-like illness diagnosed.

Figure 1. Detection of influenza viruses in Yamagata, Japan, during the 2022–23 and 2023–24 influenza seasons (n = 619). Monthly reports of influenza virus detection by the National Epidemiologic Surveillance of Infectious Diseases (https://www.niid.go.jp/niid/en/survaillance-data-table-english.html) were used for study of influenza A(H1N1)pdm09 virus with reduced susceptibility to baloxavir. Clinical specimens were collected from outpatients who had influenza or influenza-like illness diagnosed.

Main Article

Page created: March 19, 2025
Page updated: April 25, 2025
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