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Infection in Nile Tilapia (): A Review.
Biology (Basel)
November 2024
Aquatic Animal Medicine and Management Department, Faculty of Veterinary Medicine, Assiut University, Assiut 71529, Egypt.
(Group B Lancefield) has emerged as a significant pathogen affecting both humans and animals, including aquatic species. Infections caused by are becoming a growing concern in aquaculture and have been reported globally in various freshwater and marine fish species, particularly those inhabiting warm water environments. This has led to numerous outbreaks with high morbidity and mortality in fish.
View Article and Find Full Text PDFDissecting the Enterococcal Polysaccharide Antigen (EPA) structure to explore innate immune evasion and phage specificity.
Carbohydr Polym
January 2025
School of Biosciences, University of Sheffield, Sheffield, UK. Electronic address:
Streptococci, Lactococci and Enterococci all produce L-rhamnose-containing cell wall polysaccharides which define Lancefield serotypes and represent promising candidates for the design of glycoconjugate vaccines. The L-rhamnose containing Enterococcal Polysaccharide Antigen (EPA), produced by the opportunistic pathogen Enterococcus faecalis, plays a critical role in normal growth, division, biofilm formation, antimicrobial resistance, phage susceptibility, and innate immune evasion. Despite the critical role of this polymer in E.
View Article and Find Full Text PDFExploring the necessity of molecular detection for Streptococcus dysgalactiae subsp equisimilis: Often misdiagnosed, and emerging pathogen.
Indian J Med Microbiol
December 2024
Department of Clinical Microbiology, Christian Medical College, Vellore, India. Electronic address:
Background: Streptococcus dysgalactiae subsp equisimilis (SDSE) is an emerging pathogen causing pharyngitis and post-streptococcal sequelae like S. pyogenes. SDSE was initially considered a commensal microorganism inhabiting the upper respiratory tract and skin.
View Article and Find Full Text PDFSerological responses to target Streptococcus pyogenes vaccine antigens in patients with proven invasive beta-haemolytic streptococcal infections.
J Infect Dis
October 2024
Department of Infectious Diseases, Fiona Stanley Fremantle Hospitals Group, Murdoch, Western Australia, Australia, 6150.
Background: Rising incidence of invasive beta-haemolytic streptococcal (iBHS) infections has prompted consideration of vaccination as a preventative strategy for at-risk populations. The benefits of a vaccine targeting Lancefield group A (Streptococcus pyogenes; Strep A) would increase if cross-species immunity against Lancefield groups C/G (Streptococcus dysgalactiae subspecies equisimilis; SDSE) and B (Streptococcus agalactiae; GBS) was demonstrated.
Methods: A prospective, observational study of adult patients with iBHS infections due to Strep A, SDSE or GBS.
Streptococcus suis subsp. hashimotonensis subsp. nov.: Lancefield group A antigen-positive organisms isolated from human clinical specimens and wild boar oral cavity samples.
Syst Appl Microbiol
September 2024
Department of Microbiology, School of Pharmacy, Aichi Gakuin University, 1-100 Kusumoto-cho, Nagoya, Aichi 464-8650, Japan. Electronic address:
Three Streptococcus suis-like strains positive for Lancefield antigen group A were isolated from human boar bite wounds and the oral cavities of boars in Hashimoto City, Wakayama Prefecture, Japan, and their taxonomic positions were investigated. Application of the VITEK2 system identified all three isolates as S. suis with > 94 % probability.
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