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- W4368361774 abstract "Acinetobacter baumannii (AB) has emerged as one of the most problematic pathogens affecting critically ill patients. This study aimed to investigate the longitudinal epidemiology of AB causing invasive diseases in children.Acinetobacter spp. cultured from sterile body fluids and identified as Acinetobacter calcoaceticus-baumannii (ACB) complexes by automated systems from children aged below 19 years old were prospectively collected during 2001-2020. The discriminative partial sequence of rpoB gene was sequenced to identify the species, and sequence types (STs) were determined. Temporal changes in antimicrobial susceptibilities and STs were analyzed.In total, 108 non-duplicate ACB isolates were obtained from patients with invasive infections. The median age was 1.4 (interquartile range, 0.1-7.9) years, and 60.2% (n = 65) were male. Acinetobacter baumannii comprised 55.6% (n = 60) of the isolates, and the 30-day mortality was higher in patients with isolated AB than in those with non-baumannii Acinetobacter spp. (46.7% vs. 8.3%, P < 0.001). After 2010, complete genotype replacement was observed from non-CC92 genotypes to only CC92 genotypes. Carbapenem resistance rates were highest in AB CC92 (94.2%), followed by AB non-CC92 (12.5%) and non-baumannii Acinetobacter spp. (2.1%). During 2014-2017, which included clustered cases of invasive ST395, colistin resistance increased to 62.5% (n = 10/16), showing a mortality rate of 88% during this period.Complete genotype replacement of non-CC92 with CC92 genotypes was observed. AB CC92 was extensively drug-resistant, and pandrug resistance was observed depending on the ST, warranting careful monitoring." @default.
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- W4368361774 date "2023-05-03" @default.
- W4368361774 modified "2023-10-06" @default.
- W4368361774 title "Molecular epidemiology of Acinetobacter baumannii complex causing invasive infections in Korean children during 2001–2020" @default.
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- W4368361774 doi "https://doi.org/10.1186/s12941-023-00581-3" @default.
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