Loading
Klebsiella Infections · Journal article
Emerging Microbes & Infections · September 1, 2026
Early or partial results. Treat as a signal, not a conclusion.
This is a molecular epidemiological survey of blaKPC-3-harbouring K. pneumoniae isolates recovered from a South Korean regional healthcare network over five years. Two chromosomally distinct lineages (ST628/KL15 and ST48/KL62) showed near-clonal relatedness within type, shared IncFII(K) plasmid backbones, and evidence of vertical clonal spread across facilities, with one isolate carrying a divergent multireplicon plasmid. The findings support regional persistence of a rare carbapenemase genotype through sustained dissemination and raise implications for surveillance strategy, but do not establish clinical outcomes or treatment efficacy.
Retrospective genomic epidemiology survey. Klebsiella pneumoniae isolates harbouring blaKPC-3 detected across multiple healthcare facilities in the Republic of Korea over a five-year period. Republic of Korea, regional healthcare network.
Two chromosomally distinct lineages with concordant capsule loci (ST628/KL15 and ST48/KL62) showed multidrug-resistant phenotypes SNP analyses revealed 0–38 pairwise SNPs among ST628 isolates and 8 SNPs between ST48 isolates, indicating near-clonal relatedness cgMLST assigned ST628 isolates to complex type 19149 with 0–7 allelic differences and ST48 isolates to complex type 19150 with 5 allelic differences
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
This work underscores the epidemiological value of subtype-resolved genomic surveillance within connected healthcare networks to detect and monitor uncommon carbapenemase variants. Clinicians should be aware that rare resistance genotypes can persist regionally through clonal dissemination despite low frequency nationally, warranting local surveillance for early detection.
Genomic surveillance report describing molecular epidemiology of rare carbapenemase-resistant isolates across healthcare facilities; descriptive analysis without experimental intervention or comparative clinical outcomes.
As stated by the source record.
Quoted from the source exactly as published.
This work underscores the epidemiological value of subtype-resolved genomic surveillance within connected healthcare networks to detect and monitor uncommon carbapenemase variants. Clinicians should be aware that rare resistance genotypes can persist regionally through clonal dissemination despite low frequency nationally, warranting local surveillance for early detection.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Klebsiella pneumoniae carbapenemase-3 (KPC-3) remains rare in South Korea, where KPC-2 is the dominant carbapenemase, making the repeated detection of a concentrated blaKPC-3 signal over five years notable. We performed genomic analyses of blaKPC-3-harbouring K. pneumoniae from a regional healthcare network. Two chromosomally distinct lineages with concordant capsule loci (ST628/KL15 and ST48/KL62) presented multidrug-resistant phenotypes, and the virulence-associated loci were confined to ST48. Single-nucleotide polymorphism (SNP) analyses revealed near-clonal relatedness within lineages, with 0-38 pairwise SNPs among ST628 isolates and 8 SNPs between the two ST48 isolates. Core-genome multilocus sequence typing (cgMLST) supported this structure, as ST628 isolates were assigned to complex type 19149 with 0-7 allelic differences, and ST48 isolates were assigned to complex type 19150 with 5 allelic differences. These patterns support vertical spread via clonal expansion across multiple facilities. Despite substantial chromosomal separation, most isolates carried the same IncFII(K) plasmid backbone and blaKPC-3, and they were nearly indistinguishable from a plasmid previously reported in South Korea. One isolate carried blaKPC-3 on a distinct multireplicon IncFIB(K)/IncFII(K) plasmid, indicating that the signal was not confined to a single plasmid backbone. In both plasmids, blaKPC-3 was embedded within Tn4401b. These findings indicate that a rare blaKPC-3 genotype can persist regionally through sustained clonal dissemination and that cross-lineage linkage is compatible with past horizontal transfer involving a conserved plasmid. These findings underscore the need for subtype-resolved, regionally coordinated genomic surveillance in connected healthcare networks to detect uncommon carbapenemase variants early.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.