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Rectovaginal group B streptococcus colonization among pregnant women in Nicaragua: a systematic review and meta-analysis

Maternal colonization with group B Streptococcus (GBS) is a predictor of neonatal sepsis. In Nicaragua, neonatal sepsis is a major cause of hospitalization, but it can be prevented with intrapartum antibiotic prophylaxis. We undertook this study to estimate the pooled prevalence of rectovaginal GBS...

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Published in:The journal of maternal-fetal & neonatal medicine 2021-08, Vol.34 (15), p.2418-2426
Main Authors: Vielot, Nadja A., Toval-Ruíz, Christian E., Weber, Rachel Palmieri, Becker-Dreps, Sylvia, Alemán Rivera, Teresa de Jesús
Format: Article
Language:English
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Summary:Maternal colonization with group B Streptococcus (GBS) is a predictor of neonatal sepsis. In Nicaragua, neonatal sepsis is a major cause of hospitalization, but it can be prevented with intrapartum antibiotic prophylaxis. We undertook this study to estimate the pooled prevalence of rectovaginal GBS colonization among pregnant women 35-40-week gestation in Nicaragua, and sensitivity of GBS isolates to various antibiotics. We systematically searched electronic databases of peer-reviewed and unpublished literature using prespecified search terms. We included English- and Spanish-language studies of rectovaginal GBS colonization and/or antibiotic sensitivity of GBS isolates that followed internationally-recognized diagnostic standards, from various sites and years. Two reviewers independently abstracted data and assessed risk of study bias. We then meta-analyzed the pooled prevalence of rectovaginal GBS colonization and antibiotic sensitivity of GBS isolates. We performed subgroup analyses by geographic location, urbanicity, and study risk of bias. Prevalence of rectovaginal GBS colonization from 13 samples in 11 studies was 0.14 (95% CI: 0.09, 0.21). Effect size heterogeneity was identified between coastal (0.12 [95% CI: 0.07, 0.19]) and central study sites (0.23 [95% CI: 0.18, 0.28]), and between predominantly rural (0.06 [95% CI: 0.02, 0.10]) and urban (0.28 [95% CI: 0.19, 0.37]) samples of pregnant women. GBS sensitivity to penicillin, the first-line antibiotic for intrapartum prophylaxis, was 0.89 (95% CI: 0.71, 1.00) based on seven studies. Maternal GBS colonization was substantial in some study sites. Most GBS isolates are sensitive to recommended antibiotics, and intrapartum antibiotic prophylaxis may effectively prevent neonatal sepsis in Nicaragua.
ISSN:1476-7058
1476-4954
DOI:10.1080/14767058.2019.1667324