[Maternal chemoprophylaxis against group B Streptococcus colonization. The consequences of not adopting the international recommendation].

Objective: To know the criteria which determine the chemoprophylaxis on pregnant women colonized by Streptococcus agalactiae (GBS) and the impact in our environment.

Material And Methods: A retrospective analysis, identifying pregnant women with isolation of Streptococcus agalactiae on screening cultures, cervical swabs and urine culture. Two groups were analyzed, group 1 received chemoprophylaxis, and group 2 without chemoprophylaxis.