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Revista Médica del Uruguay

On-line version ISSN 1688-0390

Abstract

RIVAS, Carlos; TALLAC, Ivalú  and  ETCHENIQUE, Analí. Colonización vaginorrectal por Streptococcus del grupo B en mujeres embarazadas, entre las 35 a 37 semanas de gestación. Rev. Méd. Urug. [online]. 2006, vol.22, n.3, pp.191-196. ISSN 1688-0390.

Summary Background. Group B streptococcus (GBS/EGB) is a cause of serious infections in neonates; intrapartum transmission in carrier women is vertical. Uruguayan data lack on information about GBS carriers. GBS detection carriage screen in all pregnant women at between 35 and 37 weeks of gestation allows intrapartum chemoprophylaxis, diminishing early neonatal infection by 60-80%. Objective. To determine GBS colonization as well as vaginal and rectal cultures by direct inoculation onto Granada agar (GA) in a cohort of pregnant women attending a Health Centre in Montevideo. Results. Out of 242 cases, 25.2% were positive. Rectal swabbing was the bacteriological sample of highest performance (86.8% of positives) but 13.1% of positives were negative at anorectal area and positive at vaginal area. Conclusions. The studied cohort showed that 25% of pregnant women are GBS carriers at between 35 and 37 weeks of gestation. No differences were seen considering ages. Anorectal swabbing was the best bacteriological sample, but vaginal swabbing should not be avoided. GA culture has shown an excellent performance. Data confirmed the need to establish national recommendations for prevention, diagnose and treatment for GBS neonatal infection.

Keywords : INFECCIONES ESTREPTOCÓCICAS [transmisión]; INFECCIONES ESTREPTOCÓCICAS [prevención  y control]; INFECCIONES ESTREPTOCÓCICAS [ congénito]; COMPLICACIONES INFECCIOSAS DEL EMBARAZO [ epidemiología].

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