Brief communication Young Ah Kim1, Seok Hoon Jeong2,3, Jong Hee Shin4, Kyeong Seob Shin5, Jeong Hwan Shin6, Young Ree Kim7, Hyun Soo Kim8, Young Uh9, Nam Hee Ryoo10 1Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, 2Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, 3Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, 4Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, 5Department of Laboratory Medicine, Chungbuk National University College of Medicine, Cheongju, 6Department of Laboratory Medicine and Paik Institute for Clinical Research, Inje University College of Medicine, Busan, 7Department of Laboratory Medicine, Jeju National University, College of Medicine, Jeju, 8Department of Laboratory Medicine, Hallym University Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, 9Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju, 10Department of Laboratory Medicine, Keimyung University School of Medicine, Daegu, Korea Corresponding to Young Ah

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, Seok Hoon Jeong2,3, Jong Hee Shin4, Kyeong Seob Shin5, Jeong Hwan Shin6, Young Ree Kim7, Hyun Soo Kim8, Young Uh9, Nam Hee Ryoo10 1Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, 2 Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, 3Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, 4Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, 5Department of Laboratory Medicine, Chungbuk National University College of Medicine, Cheongju, 6Department of Laboratory Medicine and Paik Institute for Clinical Research, Inje University College of Medicine, Busan, 7Department of Laboratory Medicine, Jeju National University College of Medicine, Jeju, 8Department of Laboratory Medicine, Hallym University Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, 9Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju, 10Department of Laboratory Medicine, Keimyung University School of Medicine, Daegu, Korea Corresponding to Young

Original article Hyunsoo Kim1, Young Ah Kim2, Young Hee Seo3, Hyukmin Lee3,4, Kyungwon Lee3,4 1Department of Laboratory Medicine, National Police Hospital, Seoul, 2Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, 3Research Institute of Bacterial Resistance and Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, 4Seoul Clinical Laboratories, Yongin, Korea Corresponding to Young Ah Kim, E-mail: yakim@nhimc.or.kr Ann Clin Microbiol 2022;25(4):119-124. https://doi.org/10.5145/ACM.2022.25.4.2Received on 13 July 2022, Revised on 6 September 2022, Accepted on 8 September 2022, Published on 20 December 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 application of genotypic antimicrobial sensitivity tests (ASTs) is dependent on the reliability of the predictions of phenotypic resistance. In this study,

Original article Jinho Heo1, Yu Jeong Choi1, Young Ah Kim2, Seok Hoon Jeong1,3, Jong Hee Shin4, Kyeong Seob Shin5, Jeong Hwan Shin6, Young Ree Kim7, Hyun Soo Kim8, Young Uh9, Nam Hee Ryoo10 1Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, 2Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, 3Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, 4Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, 5Department of Laboratory Medicine, Chungbuk National University College of Medicine, Cheongju, 6Department of Laboratory Medicine and Paik Institute for Clinical Research, Inje University College of Medicine, Busan, 7Department of Laboratory Medicine, Jeju National University, College of Medicine, Jeju, 8Department of Laboratory Medicine, Hallym University Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, 9Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju, 10Department of Laboratory Medicine, Keimyung University School of Medicine, Daegu,

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