Bacterial Infections and Antibiotic Resistance in Veterinary Medicine, 2nd Edition

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Veterinary Microbiology".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 390

Special Issue Editors


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Guest Editor
School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil
Interests: infectious diseases; antimicrobial resistance; zoonotic pathogens; molecular biology
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Pathology, Reproduction, and One Health, School of Agricultural and Veterinarian Sciences (FCAV), São Paulo State University (UNESP), Jaboticabal, SP, Brazil.
Interests: bacterial pathogens; antimicrobial resistance; zoonotic diseases; epidemiology; bioinformatics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is the continuation of our previous Special Issue "Bacterial Infections and Antibiotic Resistance in Veterinary Medicine".

Bacterial infections are a prominent issue in veterinary medicine, whether in livestock, pets, aquiculture or wildlife. In the genomic era, researchers are continuously improving diagnostic approaches and enhancing epidemiologic knowledge of bacterial pathogens, particularly emerging ones. Zoonotic pathogens remain a problem and have adapted to newer relationships formed between humans and animals and the evolution of animal production systems. Associated with the global burden of antimicrobial resistance, the treatment and prevention of diseases have also led to challenges for some pathogens and hosts.

For this Special Issue of Microorganisms, we welcome contributions that provide recent insights into animal bacterial diseases in the context of One Health, as well as antimicrobial use and associated antimicrobial resistance. We seek original research, short communications, and reviews regarding all aspects of diagnosis, epidemiology, antimicrobial resistance, and disease impact, as well as recent treatment and prevention approaches.

Dr. Andrea Micke Moreno
Dr. Luisa Zanolli Moreno
Guest Editors

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Keywords

  • veterinary microbiology
  • bacterial infection
  • One Health
  • antimicrobial resistance

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Published Papers (1 paper)

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Research

15 pages, 2692 KiB  
Article
Isolation, Antimicrobial Susceptibility, and Genotypes of Three Pasteurellaeae Species Prevalent on Pig Farms in China Between 2021 and 2023
by Fangxin Li, Xin Zong, Guosheng Chen, Yu Zhang, Qi Cao, Lu Li, Huanchun Chen, Zhong Peng and Chen Tan
Microorganisms 2025, 13(4), 938; https://doi.org/10.3390/microorganisms13040938 - 18 Apr 2025
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Abstract
Pasteurella multocida (PM), Glaesserella parasuis (GPS), and Actinobacillus pleuropneumoniae (APP) are among the species with the top five isolation rates on Chinese pig farms annually. To understand the antimicrobial susceptibility and genotypes of these three pathogens that are currently prevalent on pig farms, [...] Read more.
Pasteurella multocida (PM), Glaesserella parasuis (GPS), and Actinobacillus pleuropneumoniae (APP) are among the species with the top five isolation rates on Chinese pig farms annually. To understand the antimicrobial susceptibility and genotypes of these three pathogens that are currently prevalent on pig farms, we investigated 151 bacterial strains (64 PM, 48 GPS, and 39 APP) isolated from 4190 samples from farms in 12 Chinese provinces between 2021 and 2023. The prevalent serotypes were PM type D (50.0%), GPS type 5/12 (47.92%), and APP type 7 (35.90%). A relatively high proportion of PM and APP were resistant to ampicillin (PM, 93.75%; APP, 71.79%), tilmicosin (PM, 64.06%; APP, 58.97%), tetracycline (PM, 43.75%; APP, 61.54%), and enrofloxacin (PM, 34.38%; APP, 10.26%). Ampicillin, tetracycline, and enrofloxacin exhibited low MIC90 values against GPS (8 µg/mL), while sulfamethoxazole-trimethoprim had a high MIC90 value (512 µg/mL). A total of 18 genes conferring resistance to various antimicrobial classes were identified, and tet(L), tet(M), tet(A), blaTEM, sul2, aph(3′)-Ia, dfrA12, qnrS1, strA, sul3, and mef(B) exhibited a high frequency of identification (≥70%). The analysis of regular virulence factor genes showed that several genes, including fimB, fimA, fimD, fimF, and fepG, were found in all PM, GPS, and APP strains. However, certain genes exhibited species-specific preferences, even if they belonged to the same category. Full article
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