Chun-Mei Chen1, Min Wang2, Xian-Ping Li1, Peng-Ling Li3, Jing-Jing Tian1, Kan Zhang1, Can Luo1. 1. Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, 139 Renmin Road, Changsha, 410011, Hunan, China. 2. Department of Laboratory Medicine, The Second Xiangya Hospital, Central South University, 139 Renmin Road, Changsha, 410011, Hunan, China. wangmin0000@csu.edu.cn. 3. Department of Laboratory Medicine, Jiangxi Cancer Hospital, Nanchang, Jiangxi, China.
Abstract
BACKGROUND: Klebsiella pneumoniae is a leading cause of hospital-associated (HA) infections. It has been reported that gastrointestinal colonization (GI) is likely to be a common and significant reservoir for the transmission and infections of K. pneumoniae in both adults and neonates. However, the homologous relationship between clinically isolated extraintestinal and enteral K. pneumoniae in neonates hasn't been characterized yet. RESULTS: Forty-three isolates from 21 neonatal patients were collected in this study. The proportion of carbapenem resistance was 62.8%. There were 12 patients (12/21, 57.4%) whose antibiotic resistance phenotypes, genotypes, and ST types (STs) were concordant. Six sequence types were detected using MLST, with ST37 and ST54 being the dominant types. The results of MLST were consist with the results of PFGE. CONCLUSIONS: These data showed that there might be a close homologous relationship between extraintestinal K. pneumoniae (EXKP) and enteral K. pneumoniae (EKP) in neonates, indicating that the K. pneumoniae from the GI tract is possibly to be a significant reservoir for causing extraintestinal infections.
BACKGROUND:Klebsiella pneumoniae is a leading cause of hospital-associated (HA) infections. It has been reported that gastrointestinal colonization (GI) is likely to be a common and significant reservoir for the transmission and infections of K. pneumoniae in both adults and neonates. However, the homologous relationship between clinically isolated extraintestinal and enteral K. pneumoniae in neonates hasn't been characterized yet. RESULTS: Forty-three isolates from 21 neonatal patients were collected in this study. The proportion of carbapenem resistance was 62.8%. There were 12 patients (12/21, 57.4%) whose antibiotic resistance phenotypes, genotypes, and ST types (STs) were concordant. Six sequence types were detected using MLST, with ST37 and ST54 being the dominant types. The results of MLST were consist with the results of PFGE. CONCLUSIONS: These data showed that there might be a close homologous relationship between extraintestinal K. pneumoniae (EXKP) and enteral K. pneumoniae (EKP) in neonates, indicating that the K. pneumoniae from the GI tract is possibly to be a significant reservoir for causing extraintestinal infections.
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