Group C Streptococcus dysgalactiae subsp. equisimilis in south-east Brazil: genetic diversity, resistance profile and the first report of human and equine isolates belonging to the same multilocus sequence typing lineage

Journal of Medical Microbiology
Ligia Guedes da SilvaBernadete Teixeira Ferreira-Carvalho

Abstract

Streptococcus dysgalactiae subsp. equisimilis (SDSE) isolates are the most common group C streptococci in humans and reports of invasive infections associated with SDSE have been increasing. Molecular epidemiology studies are an important strategy to trace the emergence and spread of possible well-fit bacterial pathogens of humans and animals. In this work, we analysed the antimicrobial and clonal profiles of 115 SDSE infection and colonization isolates of human and equine origin. PFGE revealed the spread of two main clusters: clone A (57.4%) and clone A (26.1%). Remarkably, two isolates from clone B obtained from human colonization cases displayed identical PFGE patterns to those of three equine infection isolates. In addition, multilocus sequence typing allocated these isolates to ST129 (CC31). All of the SDSE isolates were susceptible to penicillin, vancomycin, gentamicin, levofloxacin and chloramphenicol. Tetracycline and erythromycin resistance rates were 65.2 and 13.9% respectively. Nevertheless, none of the isolates displaying sporadic PFGE patterns showed erythromycin resistance. The majority of erythromycin-resistant isolates from clone A had inducible resistance to macrolides, lincosamines and streptogramins B (iMLSB ...Continue Reading

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Citations

Jan 15, 2016·Microbiology and Immunology·Shinya WatanabeTohru Miyoshi-Akiyama
Mar 4, 2020·Journal of Medical Microbiology·Victor Lima SantosBernadete Teixeira Ferreira-Carvalho
Jun 20, 2018·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·Marc Noguera-JulianOriol Mitjà
Jul 12, 2017·The Canadian Journal of Infectious Diseases & Medical Microbiology = Journal Canadien Des Maladies Infectieuses Et De La Microbiologie Médicale·Marta Kłos, Jadwiga Wójkowska-Mach
Dec 15, 2020·Veterinary Medicine and Science·Yue-Xia DingWen-Chao Liu
Oct 31, 2020·Frontiers in Microbiology·Cinthia Alves-BarrocoPedro Viana Baptista
Mar 23, 2021·Journal of Medical Microbiology·Paulina GlajznerMagdalena Szemraj
Mar 31, 2018·Microbiology Spectrum·Marisa HaenniJean-Yves Madec

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