Publications by authors named "Valerie Marcou"

Article Synopsis
  • Early initiation of antiretroviral therapy (ART) in HIV-1-infected infants shows a positive impact on immune system health, specifically CD4 and CD8 T lymphocytes, but the effects in older children and adolescents need more study.
  • The ANRS-EP59-CLEAC study examined 27 children and 9 adolescents who started ART early compared to 19 children and 21 adolescents who started later, revealing that early treatment leads to higher CD8 T cell percentages.
  • Overall, while early ART benefits CD8 T cells significantly, the impact on CD4 T cells is less pronounced, suggesting late-treated pediatric patients can still effectively counteract CD4 T-cell loss through thymus production.
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To identify factors associated with vaginal colonization and persistence by group B Streptococcus (GBS) and by the hypervirulent neonatal CC-17 clone in late pregnancy and after delivery, a multicentre prospective observational cohort with 3-month follow-up was established in two university hospitals, Paris area, France. Pregnant women were recruited when antenatal screening for GBS vaginal colonization at 34-38 weeks of gestational age was positive. Vaginal samples were analysed by conventional culture methods at antenatal screening, delivery, and 21 and 60 days following delivery.

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Background: In infants, the mode of acquisition of CC17 group B Streptococcus (GBS), the hypervirulent clone responsible for late-onset disease (LOD), remains elusive.

Methods: In a prospective multicenter study in France, we evaluated GBS colonization in mother-baby pairs with 2 months of follow-up between 2012 and 2015. Criteria included positivity for GBS colonization at antenatal screening or at delivery.

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