An interventional, randomized, multicenter, double-blind, placebo-controlled, parallel-group study will be conducted to evaluate the effectiveness of the strain Lactobacillus salivarius V4II-90 in the reduction of Group B Streptococcus (GBS) colonization in pregnant women who are GBS carriers. Forty GBS-positive participants in their first trimester of pregnancy will be randomly assigned to one of the two study groups: The experimental group with 3 months probiotic consumption; and the control group with 3 months placebo consumption. The efficacy of the probiotic strain to reduce the incidence of Group B Streptococcus will be assessed by the percentage of participants with a vaginal and/or rectal detection of Group B Streptococcus at the end of the study, by bilateral comparison of the treatment group with the control group at the same time period. The estimated duration of the study will be 30 weeks, which includes a 3-month product administration. The intervention will start at week 23 ± 4 days of pregnancy and end at week 35 ± 4 days. Then, a visit will be completed one month after delivery.
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Participants (%) with a vaginal and/or rectal detection of Group B Streptococcus.
Timeframe: 6 months