Prevalence, species identification, and antibiotic resistance of Staphylococci in dogs visiting veterinary clinics in Vietnam.

Staphylococci are important commensal and opportunistic bacteria found in various animals, including dogs and humans. The emergence of antibiotic-resistant Staphylococci is a growing global concern, including in Vietnam. This study aimed to investigate the prevalence, species distribution, and antib...

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Main Authors: Nguyen Thi Lan Anh, Nguyen Vu Thuy Hong Loan, Nguyen Thuy Y Vi, Dao Huyen Tran, Luu Thi Thanh Hang, Sandra Steele, Lam Thanh Nguyen
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2025-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0328472
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author Nguyen Thi Lan Anh
Nguyen Vu Thuy Hong Loan
Nguyen Thuy Y Vi
Dao Huyen Tran
Luu Thi Thanh Hang
Sandra Steele
Lam Thanh Nguyen
author_facet Nguyen Thi Lan Anh
Nguyen Vu Thuy Hong Loan
Nguyen Thuy Y Vi
Dao Huyen Tran
Luu Thi Thanh Hang
Sandra Steele
Lam Thanh Nguyen
author_sort Nguyen Thi Lan Anh
collection DOAJ
description Staphylococci are important commensal and opportunistic bacteria found in various animals, including dogs and humans. The emergence of antibiotic-resistant Staphylococci is a growing global concern, including in Vietnam. This study aimed to investigate the prevalence, species distribution, and antibiotic-resistance profiles of Staphylococci isolated from dogs visiting veterinary clinics in Vietnam. A total of 309 Staphylococcus strains were isolated from 410 nasal and skin samples collected from both healthy and diseased dogs between December 2021 and December 2023 in Ho Chi Minh city. The isolation rate of Staphylococcus spp. was 71.2% (95% confidence interval [CI]: 66.6%-75.6%), with 78.9% (95% CI: 73.6%-83.7%) in diseased dogs, 56.9% (95% CI: 48.4%-65.2%) in healthy dogs, 80.1% (95% CI: 74.3%-85.1%) in skin samples, and 60.3% (95% CI: 52.9%-67.5%) in nasal samples. Species identification indicated that S. pseudintermedius was dominant, followed by S. aureus. Other species identified included S. epidermidis and S. schleiferi. Antibiotic susceptibility testing showed complex resistance patterns. Approximately 91.3% of isolates were resistant to at least one antibiotic, and 60.5% were multidrug-resistant (resistant to three or more antibiotics). A total of 215 antibiotic-resistance phenotypes were observed, with 85 phenotypes showing resistance to more than ten different antibiotics. Isolates from diseased dogs exhibited higher antibiotic-resistance rates than those from healthy dogs. Several antibiotic-resistance genes were identified, with aacA-aphD being the most prevalent, followed by tetK, gyrA, mecA, msrA, dfrA, and ermA. These findings highlight the widespread presence of antibiotic-resistant Staphylococci in dogs and emphasize the necessity for ongoing surveillance of antibiotic-resistance evolution in animals and its implications for human health.
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spelling doaj-art-44092733bef047168ac464b0fec9e5bd2025-08-20T03:58:03ZengPublic Library of Science (PLoS)PLoS ONE1932-62032025-01-01207e032847210.1371/journal.pone.0328472Prevalence, species identification, and antibiotic resistance of Staphylococci in dogs visiting veterinary clinics in Vietnam.Nguyen Thi Lan AnhNguyen Vu Thuy Hong LoanNguyen Thuy Y ViDao Huyen TranLuu Thi Thanh HangSandra SteeleLam Thanh NguyenStaphylococci are important commensal and opportunistic bacteria found in various animals, including dogs and humans. The emergence of antibiotic-resistant Staphylococci is a growing global concern, including in Vietnam. This study aimed to investigate the prevalence, species distribution, and antibiotic-resistance profiles of Staphylococci isolated from dogs visiting veterinary clinics in Vietnam. A total of 309 Staphylococcus strains were isolated from 410 nasal and skin samples collected from both healthy and diseased dogs between December 2021 and December 2023 in Ho Chi Minh city. The isolation rate of Staphylococcus spp. was 71.2% (95% confidence interval [CI]: 66.6%-75.6%), with 78.9% (95% CI: 73.6%-83.7%) in diseased dogs, 56.9% (95% CI: 48.4%-65.2%) in healthy dogs, 80.1% (95% CI: 74.3%-85.1%) in skin samples, and 60.3% (95% CI: 52.9%-67.5%) in nasal samples. Species identification indicated that S. pseudintermedius was dominant, followed by S. aureus. Other species identified included S. epidermidis and S. schleiferi. Antibiotic susceptibility testing showed complex resistance patterns. Approximately 91.3% of isolates were resistant to at least one antibiotic, and 60.5% were multidrug-resistant (resistant to three or more antibiotics). A total of 215 antibiotic-resistance phenotypes were observed, with 85 phenotypes showing resistance to more than ten different antibiotics. Isolates from diseased dogs exhibited higher antibiotic-resistance rates than those from healthy dogs. Several antibiotic-resistance genes were identified, with aacA-aphD being the most prevalent, followed by tetK, gyrA, mecA, msrA, dfrA, and ermA. These findings highlight the widespread presence of antibiotic-resistant Staphylococci in dogs and emphasize the necessity for ongoing surveillance of antibiotic-resistance evolution in animals and its implications for human health.https://doi.org/10.1371/journal.pone.0328472
spellingShingle Nguyen Thi Lan Anh
Nguyen Vu Thuy Hong Loan
Nguyen Thuy Y Vi
Dao Huyen Tran
Luu Thi Thanh Hang
Sandra Steele
Lam Thanh Nguyen
Prevalence, species identification, and antibiotic resistance of Staphylococci in dogs visiting veterinary clinics in Vietnam.
PLoS ONE
title Prevalence, species identification, and antibiotic resistance of Staphylococci in dogs visiting veterinary clinics in Vietnam.
title_full Prevalence, species identification, and antibiotic resistance of Staphylococci in dogs visiting veterinary clinics in Vietnam.
title_fullStr Prevalence, species identification, and antibiotic resistance of Staphylococci in dogs visiting veterinary clinics in Vietnam.
title_full_unstemmed Prevalence, species identification, and antibiotic resistance of Staphylococci in dogs visiting veterinary clinics in Vietnam.
title_short Prevalence, species identification, and antibiotic resistance of Staphylococci in dogs visiting veterinary clinics in Vietnam.
title_sort prevalence species identification and antibiotic resistance of staphylococci in dogs visiting veterinary clinics in vietnam
url https://doi.org/10.1371/journal.pone.0328472
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