Characteristics and comparative genome analysis of Yersinia enterocolitica and related species associated with human infections in Switzerland 2019-2023.
Infect Genet Evol
; 123: 105652, 2024 Sep.
Article
em En
| MEDLINE
| ID: mdl-39103026
ABSTRACT
PURPOSE:
We aimed to characterise Yersinia enterocolitica from human clinical specimens in Switzerland using epidemiological, microbiological and whole-genome sequencing (WGS) data.METHODS:
Isolates (n = 149) were collected between January 2019 and December 2023. Epidemiological data was noted and strains were characterized by biochemical and serological typing, antimicrobial susceptibility testing (AST), and WGS-based analysis.RESULTS:
Most of the isolates (86%) were from stool specimens and 52% were from male patients. The patients' median age was 28 years (range < 1-94 years). Typing assigned the isolates to bioserotype 4/O3 (44%), biotype 1A (34%), bioserotype 2/O9 (21%), and bioserotype 3/O3 (1%). WGS identified Y. enterocolitica (n = 147), Y. alsatica (n = 1) and Y. proxima (n = 1). Seven isolates were multidrug resistant (MDR) and harboured plasmid pAB829 carrying aph(3â³)-Ib, aph(6)-Id, and tet(Y) (n = 1), pAC120 carrying aph(6)-Id and tet(A) (n = 2), or a 12.6 kb Tn2670-like transposon containing catA1, aadA12, sul1, and qacEΔ1 (n = 4). Virulence factors (VFs) included ail (n = 99), invB, (n = 145), ystA (n = 99), ystB (n = 48) and pYV-associated VFs (n = 93). MLST and cgMLST analysis showed that BT 1A strains consisted of several STs and were highly diverse, whereas BT 2/O9 strains were all ST12 and clustered closely, and BT 4/O3 strains mostly belonged to ST18 but were more diverse. SNP analysis revealed two highly clonal BT 4/O3 subpopulations with wide spatio-temporal distribution.CONCLUSIONS:
Y. enterocolitica BT 1A, BT 2/O9 and BT 4/O3 are frequently associated with human yersiniosis in Switzerland. WGS-based subtyping of Y. enterocolitica is a powerful tool to explore the genetic diversity and the pathogenic potential of human isolates.Palavras-chave
Texto completo:
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Yersinia enterocolitica
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Yersiniose
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Genoma Bacteriano
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Sequenciamento Completo do Genoma
Limite:
Adolescent
/
Adult
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Aged
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Aged80
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Child
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Child, preschool
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Female
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Humans
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Infant
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Male
País/Região como assunto:
Europa
Idioma:
En
Revista:
Infect Genet Evol
/
Infect. gent. evol
/
Infection, genetics and evolution
Ano de publicação:
2024
Tipo de documento:
Article