Group B Streptococcus detection: comparison of PCR assay and culture as a screening method for pregnant women
Braz. j. infect. dis
;
15(4): 323-327, July-Aug. 2011. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-595672
ABSTRACT
Streptococcus agalactiae or group B Streptococcus (GBS) is one of the most important causal agents of serious neonatal infections. Numerous assays have been evaluated for GBS screening in order to validate a fast and efficient method. The aim of this study was to compare the culture technique (established as the gold standard) with the molecular method of polymerase chain reaction (PCR) with specific primers (atr gene). Two hundred and sixty-three samples were analyzed. Vaginal samples were collected, according to the Centers for Disease Control and Prevention (CDC) recommendations, from women over 35 weeks of pregnancy at Hospital de Clínicas de Porto Alegre (HCPA). Two different extraction methods were tested in all samples collected. PCR technique yielded 71 (26.99 percent) positive results. Sensitivity and specificity for PCR were 100 percent and 86.88 percent, respectively. PCR demonstrated a shorter turnaround time than the culture. The molecular methodology proved to be a useful screening for GBS, allowing effective treatment to be initiated in shorter time to prevent newborn infection.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Complicações Infecciosas na Gravidez
/
Infecções Estreptocócicas
/
Streptococcus agalactiae
/
Reação em Cadeia da Polimerase
/
Meios de Cultura
Tipo de estudo:
Estudo diagnóstico
/
Guia de Prática Clínica
/
Estudo prognóstico
/
Estudo de rastreamento
Limite:
Feminino
/
Humanos
/
Gravidez
Idioma:
Inglês
Revista:
Braz. j. infect. dis
Assunto da revista:
Doenças Transmissíveis
Ano de publicação:
2011
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Hospital de Clínicas de Porto Alegre/BR
/
Universidade Federal do Rio Grande do Sul/BR
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