# Genomic characterization of multidrug-resistant Escherichia coli with PBP3 insertions carrying blaNDM-5 carbapenemase isolated from infants in Kenya

**Authors:** Kevin Kariuki, Collins Kigen, James Wachira, Polycarp Mogeni, Doreen Rwigi, Benson Singa, Kirkby D. Tickell, Ferric C. Fang, Samuel Kariuki, Judd L. Walson, Patricia B. Pavlinac

PMC · DOI: 10.1128/mra.00121-25 · 2025-06-18

## TL;DR

This study reports on drug-resistant E. coli strains found in infants in Kenya, which could impact how patients are treated.

## Contribution

The study identifies a specific genetic feature in E. coli linked to drug resistance in infants.

## Key findings

- Carbapenem-resistant E. coli ST46 and 167 strains were isolated from infants in Kenya.
- The isolates carried blaNDM-5 and a PBP3 insertion, indicating resistance mechanisms.
- The findings suggest implications for managing patients with these resistant strains.

## Abstract

We report on carbapenem-resistant Escherichia coli ST46 and 167 strains isolated from fecal samples of 4- and 8-month-old infants, respectively, in Kenya, collected at discharge after more than 4 days of hospitalization. The isolates carried blaNDM-5 carbapenemase and a PBP3 (333YRIN/K334) insertion. This finding has implications for patient management.

## Linked entities

- **Genes:** pbp3 (penicillin-binding protein) [NCBI Gene 884853]
- **Species:** Escherichia coli (taxon 562)

## Full-text entities

- **Chemicals:** carbapenem (MESH:D015780)
- **Species:** Homo sapiens (human, species) [taxon 9606], Escherichia coli (E. coli, species) [taxon 562]

## Figures

1 figure with captions in the complete paper: https://tomesphere.com/paper/PMC12243540/full.md

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Source: https://tomesphere.com/paper/PMC12243540