Nationwide surveillance of bacterial respiratory pathogens conducted by the surveillance committee of the Japanese Society of Chemotherapy, the Japanese Association for Infectious Diseases, and the Japanese Society for Clinical Microbiology in 2019–2020: General view of the pathogens' antibacterial susceptibility

Issei Tokimatsu*, Tetsuya Matsumoto, Hiroki Tsukada, Yuji Fujikura, Makoto Miki, Yoshitomo Morinaga, Junko Sato, Tomotaro Wakamura, Hiroshi Kiyota, Kazuhiro Tateda, Hideji Yanagisawa, Takaaki Sasaki, Hideki Ikeda, Hiroshi Horikawa, Hiroshi Takahashi, Masafumi Seki, Yoshiaki Mori, Hiroaki Takeda, Daisuke Kurai, Naoki HasegawaYoshifumi Uwamino, Makoto Kudo, Masaki Yamamoto, Yuko Nagano, Sakika Nomura, Takafumi Tetsuka, Miyuki Hosokai, Nobuki Aoki, Yoshihiro Yamamoto, Yoshitsugu Iinuma, Hiroshige Mikamo, Hiroyuki Suematsu, Takaya Maruyama, Atsushi Kawabata, Yoshiko Sugaki, Atsushi Nakamura, Yasunori Fujikawa, Tatsuya Fukumori, Akira Ukimura, Hiroshi Kakeya, Makoto Niki, Koichiro Yoshida, Yoshihiro Kobashi, Hirokazu Tokuyasu, Kazuhiro Yatera, Hiroaki Ikegami, Masaki Fujita, Takemasa Matsumoto, Katsunori Yanagihara, Junichi Matsuda, Kazufumi Hiramatsu, Takashi Shinzato

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The trends and prevalence of antimicrobial susceptibility of pathogens vary by country, region, and time. Long-term regular surveillance is required to investigate trends in the antimicrobial resistance of various isolated bacterial pathogens. We report the results of a nationwide surveillance on the antimicrobial susceptibility of bacterial respiratory pathogens in Japan conducted by the Japanese Society of Chemotherapy, the Japanese Association for Infectious Diseases, and the Japanese Society for Clinical Microbiology. The isolates were collected from clinical specimens obtained from adult patients who visited a collaborating medical facility between June 2019 and December 2020 and were diagnosed with respiratory tract infections by a physician. Antimicrobial susceptibility testing was performed in a centralized laboratory according to the methods recommended by the Clinical and Laboratory Standards Institute. Susceptibility testing was performed for 932 strains (201 Staphylococcus aureus, 158 Streptococcus pneumoniae, 6 S. pyogenes, 136 Haemophilus influenzae, 127 Moraxella catarrhalis, 141 Klebsiella pneumoniae, and 163 Pseudomonas aeruginosa) collected from 32 facilities in Japan. The proportions of methicillin-resistant S. aureus and penicillin-resistant S. pneumoniae were 35.3% and 0%, respectively. In H. influenzae, 16.2% and 16.9% were β-lactamase-producing ampicillin resistant and β-lactamase-negative ampicillin resistant, respectively. Extended-spectrum β-lactamase-producing K. pneumoniae accounted for 5.0% of all K. pneumoniae infections. Carbapenemase-producing K. pneumoniae and multi-drug-resistant P. aeruginosa with metallo-β-lactamase were not detected in this study. This surveillance will be a useful reference for treating respiratory infections in Japan and will provide evidence to enhance the appropriate use of antimicrobial agents.

Original languageEnglish
Pages (from-to)731-743
Number of pages13
JournalJournal of Infection and Chemotherapy
Volume29
Issue number8
DOIs
StatePublished - 2023/08

Keywords

  • Antimicrobial resistance
  • Antimicrobial susceptibility testing
  • Bacterial respiratory pathogens
  • Pneumonia
  • β-lactamase

ASJC Scopus subject areas

  • Microbiology (medical)
  • Infectious Diseases
  • Pharmacology (medical)

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