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Pathogens
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Zoonotic Streptococci
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Zoonotic Streptococci

A special issue of Pathogens (ISSN 2076-0817). This special issue belongs to the section "Bacterial Pathogens".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 953

Special Issue Editor

Prof. Dr. Zongfu Wu

E-Mail Website
Guest Editor
College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210014, China
Interests: Streptococcus suis; Streptococcus pasteurianus; bacterial pathogenesis; bacterial RNA regulation; bacterial molecular epidemiology; antibiotic resistance; vaccines
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Streptococci are a diverse group of Gram-positive bacteria, some of which are known to cause diseases in humans and animals. Zoonotic streptococci refer to Streptococcus species that can be transmitted from animals to humans. Infections caused by zoonotic streptococci pose significant public health challenges due to their complex pathogenesis and rising antibiotic resistance. Recent studies have deepened our understanding of the molecular mechanisms behind the pathogenicity of these bacteria and their ability to evade host immune responses. However, significant challenges remain in terms of the control and prevention of diseases caused by zoonotic streptococci.

In this Special Issue, we plan to highlight recent research findings and reviews that encompass a wide range of topics related to zoonotic streptococci, including, but not limited to, the following:
Pathogenesis: Mechanisms of infection, virulence factors, host–pathogen interactions, and disease progression in both animals and humans.

Epidemiology: Patterns of infection, molecular epidemiology, transmission dynamics, risk factors, and the impacts of zoonotic streptococci on public health.

Antibiotic Resistance: Trends in antibiotic resistance, mechanisms of resistance development, and strategies to combat resistant strains.

Vaccine Development: Advances in vaccine research, efficacy studies, and the challenges in developing vaccines against zoonotic streptococci

Diagnostic Methods: Innovations in diagnostic techniques and their accuracy, reliability, and applications in clinical and veterinary settings.

We look forward to receiving your contributions.

Prof. Dr. Zongfu Wu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Pathogens is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • zoonotic streptococci
  • pathogenesis
  • antibiotic resistance
  • vaccine
  • diagnosis
  • epidemiology

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Published Papers (1 paper)

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Research

15 pages, 8288 KiB  
Article
Isolation, Identification, and Molecular Genetic Characteristics of a Pathogenic Strain of Streptococcus suis Serotype 3
by Longbai Wang, Jingli Qiu, Bing He, Xuemin Wu, Qiuyong Chen, Quanxi Wang, Renjie Wu, Bohan Zheng, Lunjiang Zhou and Xiaohong Huang
Pathogens 2025, 14(2), 192; https://doi.org/10.3390/pathogens14020192 - 14 Feb 2025
Viewed by 623
Abstract
Streptococcus suis (S. suis) is considered as one of the most crucial bacterial pathogens that leads to serious economic losses to the swine industry. Different S. suis serotypes exhibit diverse characteristics in population structure and pathogenicity. Epidemiology data underscore the importance [...] Read more.
Streptococcus suis (S. suis) is considered as one of the most crucial bacterial pathogens that leads to serious economic losses to the swine industry. Different S. suis serotypes exhibit diverse characteristics in population structure and pathogenicity. Epidemiology data underscore the importance of S. suis serotype 3 (SS3). However, except for a few epidemiological information, limited study information is available on this serotype. Herein, a pathogenic SS3 (the S. suis strain YA) was isolated from infected piglets in clinical practice, and then whole genome sequencing and analysis, hemolytic activity, antimicrobial susceptibility, pathogenicity to mice and piglets were conducted. The results of the whole genome sequencing of the S. suis strain YA showed that the complete genome was 2,167,682 bp in length with a G + C content of 41.2% and exhibited a unique sequence type (ST1801). The result of phylogenetic tree showed that it was most closely related to strain DNC15 and 6407 (ST54) from Denmark. The tet(W) and erm(B) resistant genes were identified in the S. suis strain YA by inserting into rum locus, in accordance with the result of resistance to tetracyclines and macrolide-lincosamide-streptogramin antibiotics. Twenty-seven key virulence factors were detected in the S. suis strain YA, including sly, ef and mrp, which contribute to pathogenicity in mice and piglets, causing bleeding and congestion in multiple tissue organs especially in the brains. And the LD50 value for mice was 1.54 × 107 CFU. Therefore, our research emphasizes the importance of understanding SS3, and provides valuable information for the scientific prevention and control of S. suis. Full article
(This article belongs to the Special Issue Zoonotic Streptococci)
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