Molecular epidemiology of<i>Streptococcus agalactiae</i>recovered from significant bacteriuria

Schuab, Rôde Beatriz Bastos; Arêas, Glauber Pacheco; Souza, Viviane Cata Preta; Barros, Rosana Rocha

doi:10.3109/23744235.2015.1040446

Cited by 7 publications

(5 citation statements)

References 30 publications

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“…In contrast with other studies that found a significant relationship between erythromycin resistance and serotype III 29,30,31 , this association was not present among our isolates.…”

Section: Discussioncontrasting

confidence: 99%

Serotype, virulence profile, antimicrobial resistance and macrolide-resistance determinants in Streptococcus agalactiae isolates in pregnant women and neonates in Catalonia, Spain

López

Parra

Cepas

et al. 2018

Enfermedades Infecciosas y Microbiología Clínica

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“…In contrast with other studies that found a significant relationship between erythromycin resistance and serotype III 29,30,31 , this association was not present among our isolates.…”

Section: Discussioncontrasting

confidence: 99%

Serotype, virulence profile, antimicrobial resistance and macrolide-resistance determinants in Streptococcus agalactiae isolates in pregnant women and neonates in Catalonia, Spain

López

Parra

Cepas

et al. 2018

Enfermedades Infecciosas y Microbiología Clínica

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“…We can only say that the observed resistance to CLI and ERY does not differ much from that found in Brazil [16] and Turkey [17] and that it is slightly lower than that reported in the USA [7]. In a recent Brazilian study [18], CLI resistance levels in bacteriuria were reported to be slightly lower (9.3%) than those herein detected; however, ERY resistance was considerably lower (11.3%). Notably, no LEV-resistant strains were detected.…”

Section: Discussioncontrasting

confidence: 71%

“…Serotype distribution differs from that reported in Brazil [16,18]. In a study of bacteriuria samples, the prevalent serotype was V, followed by Ia, II and III.…”

Section: Antibioticmentioning

confidence: 59%

Argentinian multicenter study on urinary tract infections due to Streptococcus agalactiae in adult patients

Vigliarolo

Arias

Suárez

et al. 2019

J Infect Dev Ctries

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Introduction: Streptococcus agalactiae (group B streptococcus, GBS) is a recognized urinary pathogen both in males and pregnant or non-pregnant women. Data regarding GBS serotypes recovered from urinary tract infections (UTIs) are scarce. The aim of this study was to describe the clinical and microbiological characteristics of UTIs caused by GBS in adult patients in Argentina. Methodology: A prospective multicenter study involving 86 centers was conducted in Argentina between July 1st, 2014 and June 30th, 2015. Antimicrobial susceptibility and serotype distribution of GBS isolated from the urinary tract of adult patients were determined. Susceptibility tests were performed by the disk diffusion and/or agar dilution methods. Epidemiological and clinical characteristics of the patients were considered to identify associated comorbilities. Results: Seven hundred and one GBS were sent to the reference laboratory in the above mentioned period, however, only 211 fulfilled our selection criteria (demographic data availability, underlying diseases reported, colony counts greater than 105 CFU/mL, single organism isolated from the urine sample). No penicillin-resistant GBS was found but fluoroquinolone resistance was high (12.8%), especially among GBS isolated from men and non-pregnant women. UTIs due to GBS were associated to underlying diseases in men and non-pregnant women, particularly diabetes mellitus. Most of the isolates showed serotypes Ia and III. Conclusions: GBS are still susceptible to penicillin but fluoroquinolone resistance is a growing concern, at least in Argentina. There are underlying conditions that could be associated to urinary infections caused by GBS.

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“…Analysis of clindamycin and erythromycin non-susceptibility rates over the years was performed with data from 15 studies [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ], divided according to the period (until and after 2010) and locality of isolates recovery ( Table 3 ). Non-susceptibility refers to resistant and intermediate isolates, according to CLSI definitions and breakpoints.…”

Section: Resultsmentioning

confidence: 99%

“…Although tetracycline has not been recommended for the therapy of any infection due to beta-hemolytic streptococci, testing of such a drug was performed in several studies in order to monitor resistance. Tetracycline resistance rates have varied from 75–100%, as observed in 11 studies [ 18 , 19 , 20 , 21 , 22 , 26 , 27 , 28 , 29 , 30 , 34 ]. The mean rate was 87.3%, without any significant differences regarding the period or locality of isolates’ recovery.…”

Section: Resultsmentioning

confidence: 99%

Antimicrobial Resistance among Beta-Hemolytic Streptococcus in Brazil: An Overview

Barros

2021

Antibiotics

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Streptococcus pyogenes, Streptococcus agalactiae and Streptococcus dysgalactiae subsp. equisimilis (SDSE) are the beta-hemolytic streptococci species with the most clinical relevance to humans. These species are responsible for several infections, ranging from mild to life-threatening diseases. Although resistance to recommended drugs has not been so critical as detected in other species, it has occurred in diverse regions. In Brazil, it is possible to observe an increasing macrolide and lincosamide resistance trend due to the spread of polyclonal strains. Macrolide–lincosamide–streptogramin B (MLS) resistance phenotypes have been prevalent among S. agalactiae and S. pyogenes, while M phenotype (resistance only to macrolides) has prevailed among SDSE resistant isolates. Fluoroquinolone resistance is rare in this country, reported only in S.agalactiae and S.pyogenes. This is due to nucleotide substitutions in gyrA and parC genes. Reduced penicillin susceptibility and vancomycin resistance, detected in other regions, have not yet been reported in Brazil. Tetracycline is not a therapeutical option, and resistance has occurred at high levels, especially among S.agalactiae. These findings highlight the need for continuous monitoring in order to track the occurrence of antimicrobial resistance among beta-hemolytic streptococci species circulating in this country.

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Molecular epidemiology ofStreptococcus agalactiaerecovered from significant bacteriuria

Cited by 7 publications

References 30 publications

Serotype, virulence profile, antimicrobial resistance and macrolide-resistance determinants in Streptococcus agalactiae isolates in pregnant women and neonates in Catalonia, Spain

Serotype, virulence profile, antimicrobial resistance and macrolide-resistance determinants in Streptococcus agalactiae isolates in pregnant women and neonates in Catalonia, Spain

Argentinian multicenter study on urinary tract infections due to Streptococcus agalactiae in adult patients

Antimicrobial Resistance among Beta-Hemolytic Streptococcus in Brazil: An Overview

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