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| Carvalho-Castro,Glei A.; Silva,Juliana R.; Paiva,Luciano V.; Custódio,Dircéia A.C.; Moreira,Rafael O.; Mian,Glaucia F.; Prado,Ingrid A.; Chalfun-Junior,Antônio; Costa,Geraldo M.. |
| Abstract Streptococcus agalactiae is one of the most common pathogens leading to mastitis in dairy herds worldwide; consequently, the pathogen causes major economic losses for affected farmers. In this study, multilocus sequence typing (MLST), genotypic capsular typing by multiplex polymerase chain reaction (PCR), and virulence gene detection were performed to address the molecular epidemiology of 59 bovine (mastitis) S. agalactiae isolates from 36 dairy farms located in the largest milk-producing mesoregions in Brazil (Minas Gerais, São Paulo, Paraná, and Pernambuco). We screened for the virulence genes bac, bca, bibA, cfb, hylB, fbsA, fbsB, PI-1, PI-2a, and PI-2b, which are associated with adhesion, invasion, tissue damage, and/or immune evasion.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Group B Streptococcus; Multilocus sequence typing; Genotypic capsular typing; Virulence genes; Bovine disease. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300551 |
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| Quiroga,M.; Pegels,E.; Oviedo,P.; Pereyra,E.; Vergara,M.. |
| This study was performed to determine the susceptibility patterns and the colonization rate of Group B Streptococcus (GBS) in a population of pregnant women. From January 2004 to December 2006, vaginal-rectal swabs were obtained from 1105 women attending Dr. Ramón Madariaga Hospital, in Posadas, Misiones, Argentina. The carriage rate of GBS among pregnant women was 7.6%. A total of 62 GBS strains were randomly selected for in vitro susceptibility testing to penicillin G, ampicillin, tetracycline, levofloxacin, gatifloxacin, ciprofloxacin, quinupristin-dalfopristin, linezolid, vancomycin, rifampicin, trimethoprim-sulfametoxazol, nitrofurantoin, gentamicin, clindamycin and erythromycin, and determination of resistance phenotypes. No resistance to penicillin,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Group B Streptococcus; Antibiotic susceptibility; Prevalence; Pregnant women; Argentina. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000200009 |
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| Munari,F.M.; De-Paris,F.; Salton,G.D.; Lora,P.S; Giovanella,P; Machado,A.B.M.P; Laybauer,L.S.; Oliveira,K.R.P.; Ferri,C; Silveira,J.L.S.; Laurino,C.C.F.C; Xavier,R.M.; Barth,A.L; Echeverrigaray,S; Laurino,J.P.. |
| Group B Streptococcus (GBS) is the most common cause of life-threatening infection in neonates. Guidelines from CDC recommend universal screening of pregnant women for rectovaginal GBS colonization. The objective of this study was to compare the performance of a combined enrichment/PCR based method targeting the atr gene in relation to culture using enrichment with selective broth medium (standard method) to identify the presence of GBS in pregnant women. Rectovaginal GBS samples from women at ≥36 weeks of pregnancy were obtained with a swab and analyzed by the two methods. A total of 89 samples were evaluated. The prevalence of positive results for GBS detection was considerable higher when assessed by the combined enrichment/PCR method than with the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus agalactiae; Group B Streptococcus; Atr gene; Screening test; Accuracy. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100029 |
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