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Non-Invasive Model of Neuropathogenic Escherichia coli Infection in the Neonatal Rat

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Published on: October 29, 2014

Pathogenicity potential of enterococci isolated from a Veterinary Biological Isolation and Containment Unit.

Catarina Geraldes^1,2, Catarina Araújo^1,2, Ana Catarina Pinheiro^1,2

¹CIISA - Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Lisbon, Portugal.

Frontiers in Veterinary Science

|November 5, 2024

Summary

Enterococcus strains from a veterinary unit show high resistance to common antibiotics and produce virulence factors like hemolysin and biofilm. This highlights the need for vigilance to prevent hospital-acquired infections (HAIs).

Keywords:

Biological Isolation and Containment Unit Enterococcus antibiotic resistance hospital-acquired infections veterinary virulence

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Area of Science:

Veterinary Microbiology
Infectious Diseases
Antimicrobial Resistance

Background:

Enterococcus species are significant contributors to hospital-acquired infections (HAIs).
Characterizing resistance and virulence profiles of Enterococcus in healthcare settings is crucial for infection control.

Purpose of the Study:

To characterize the antimicrobial resistance and virulence factors of Enterococcus isolates from a Veterinary Biological Isolation and Containment Unit (BICU).

Main Methods:

73 Enterococcus isolates were identified from a Veterinary BICU using PCR.
34 representative isolates were selected and characterized for antimicrobial resistance (disk diffusion) and virulence factor expression (hemolysin, biofilm).

Main Results:

High prevalence of resistance to erythromycin (79.4%), ampicillin (73.5%), amoxicillin-clavulanic acid (70.6%), tetracycline (67.6%), ciprofloxacin (58.8%), and levofloxacin (50.0%).
Most isolates produced hemolysin (88.2%) and biofilm (82.3%).
8.8% of isolates were classified as high-threat and 5.9% as moderate-threat pathogens.

Conclusions:

Enterococcus strains in veterinary settings exhibit significant antimicrobial resistance and virulence.
Constant surveillance of these strains in veterinary units and general healthcare facilities is essential for preventing HAIs.