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Article

Hybrid enteric-extraintestinal lineages in astA-positive Escherichia coli: Molecular characterization and high-risk MDR clones in Neonatal Calves.

Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] - 16 Jul 2026

Coşkun Mustafa Reha, Sezer Mert, Batı Yusuf Umut, Akyüz Enes, Şahin Yunus Emre, Yerli Nazlıcan

Abstract excerpt

Routine diagnostics for neonatal calf diarrhea largely target K99 (F5) Escherichia coli, overlooking atypical lineages carrying the enteroaggregative heat-stable toxin 1 (EAST1; astA). This study determined astA prevalence in K99-negative diarrheic calves and characterized the isolates, applying a stringent definition for true enteric-extraintestinal hybrids. Rectal swabs from 239 diarrheic calves (≤ 28 days)...

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Methodology Data sources Editorial policy Privacy About Contact Helena Bioinformatics

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Source

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Identifiers

PMID: 42458182
DOI: 10.1007/s42770-026-02020-9
PMCID: PMC13373149

Genes

F5

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 2 Sept 2026.

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