Brief communication Changseung Liu1, Young Hee Seo2, Kyoung Ho Roh3, Hyukmin Lee2, Kyungwon Lee2,4 1Department of Laboratory Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea2Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea3Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Korea4Seoul Clinical Laboratories Academy, Yongin, Korea Correspondence to Kyoung Ho Roh E-mail: director.roh@gmail.com Ann Clin Microbiol 2026;29(2):8. https://doi.org/10.5145/ACM.2026.29.2.8Received on 10 April 2026, Revised on 27 May 2026, Accepted on 7 June 2026, Published on 20 June 2026.Copyright © Korean Society of Clinical Microbiology.This is an Open Access article which is freely available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/). Abstract Azithromycin-resistant Neisseria gonorrhoeae poses a threat to the efficacy of gonorrhea treatment. We report the whole-genome characterization of two azithromycin-resistant N. gonorrhoeae ST1600 isolates collected in Busan, South Korea, in 2018

Original article Changseung Liu1, Daewon Kim2, Jung-Hyun Byun3, Jeonghyun Chang4, Sungjin Jo5, Heungsup Sung6 1Department of Laboratory Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea2Department of Laboratory Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea3Department of Laboratory Medicine, Gyeongsang National University Hospital, Gyeongsang National University College of Medicine, Jinju, Korea4Department of Laboratory Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea5Department of Laboratory Medicine, Eunpyeong St. Mary’s Hospital, Catholic University College of Medicine, Seoul, Korea6Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea Correspondence to Heungsup Sung, E-mail: sung@amc.seoul.kr Ann Clin Microbiol 2025;28(1):5. https://doi.org/10.5145/ACM.2025.28.1.5Received on 28 February 2024, Revised on 10 March 2025, Accepted on 11 March 2025, Published on 20 March 2025.Copyright © Korean Society of Clinical Microbiology.This is an Open Access article which is freely available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND)

Original article Young Ah Kim1, Heejung Kim2,3, Dokyun Kim3, Changseung Liu3, Seok Hoon Jeong3 1Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, 2Department of Laboratory Medicine, Yongin Severance Hospital, YongIn, 3Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea Corresponding to Heejung Kim, E-mail: hjkim12@yuhs.ac Ann Clin Microbiol 2022;25(1):17-23. https://doi.org/10.5145/ACM.2022.25.1.3Received on 16 February 2022, Revised on 8 March 2022, Accepted on 14 March 2022, Published on 20 March 2022.Copyright © Korean Society of Clinical Microbiology.This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: There has been a marked increase in the mortality rate associated with Clostridioides difficile infection (CDI) globally since 2003, with the emergence of binary toxinproducing ribotype 027

Original article Young Ah Kim1, Heejung Kim2, Dokyun Kim2, Changseung Liu3, Seok Hoon Jeong2 1Department of Laboratory Medicine, National Health Insurance Service, Ilsan Hospital, Goyang, 2Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, 3Department of Laboratory Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea Corresponding to Heejung Kim, E-mail: hjkim12@yuhs.ac Ann Clin Microbiol 2022;25(2):47-52. https://doi.org/10.5145/ACM.2022.25.2.3Received on 15 March 2022, Revised on 27 April 2022, Accepted on 27 April 2022, Published on 20 June 2022.Copyright © Korean Society of Clinical Microbiology.This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Background: The incidence of community-associated (CA) Clostridioides difficile infection (CDI) has increased in Korea. In this study, we evaluated CA-CDI risk factors