10–12 Sept 2025
Kaiserin-Friedrich-Stiftung, Berlin
Europe/Berlin timezone

Detection of Antimicrobial Resistance and ESBL-Producing E. coli from Mammals at UK Petting Zoos

12 Sept 2025, 12:15
15m
Lecture Hall

Lecture Hall

Oral presentation Antimictobial Resistance AMR - Epidemiology & Surveillance: "ESGVM Session"

Speaker

Ms Alice Nishigaki (Royal Veterinary College)

Description

The role of petting zoos in bi-directional zoonotic disease transmission is well documented, however their potential role as reservoirs of antimicrobial resistance (AMR) is un-explored within the United Kingdom (UK). This study investigated AMR in Escherichia coli and coagulase-positive staphylococci (CoPS) isolated from mammals at eight UK centres. Faecal and skin samples were collected from 166 animals to recover E. coli and CoPS. Samples underwent enrichment culture, followed by plating on non-AMR-selective media (tryptone bile-x agar, mannitol salt agar) and selective media (ESBL ChromID, mannitol salt agar with 6 mg/L oxacillin). Susceptibility to eight antimicrobial classes was assessed using Kirby-Bauer disc diffusion. Antimicrobial usage data from the last 12 months were obtained from 7/8 centres. A total of 145/166 faecal samples yielded E. coli, with an overall AMR prevalence of 42.4%, and 8.5% classified as multidrug-resistant. ESBL-producing E. coli were detected in five animals. CoPS were recovered from 54 skin swabs: Staphylococcus aureus (n=70), Staphylococcus intermedius group (SIG) (n=13), S. hyicus (n=1), with an AMR prevalence of 25.3% and a single MDR-SIG. No MRSA/MRSP were identified. Antimicrobial usage was positively correlated with AMR for E. coli (r=0.81, P=0.03) and CoPS (r=0.87, P=0.05). This study demonstrates for the first time the presence of AMR within bacteria isolated from UK petting zoo animals.

Keywords

Antimicrobial Resistance
Escherichia coli
Staphylococcus aureus
Staphylococcus pseudintermedius
Coagulase-positive staphylococci
Multidrug resistance
Extended-spectrum beta lactamase
Petting Zoo
MRSA
MRSP

Registration ID 129
Professional Status of the submitter, who is also the speaker Graduate Student

Authors

Ms Alice Nishigaki (Royal Veterinary College) Mr Kurt Arden (Royal Veterinary College) Mrs Siân-Marie Frosini (Royal Veterinary College)

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