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Updated: May 24, 2026

A Murine Model of Group B Streptococcus Vaginal Colonization
Published on: November 16, 2016
Discordant Streptococcus agalactiae (Group B streptococcus) gestational infection in monochorionic/diamniotic and
Jason D Pimentel1, Linda J Szymanski, Linoj P Samuel
1Department of Pathology and Laboratory Medicine, Henry Ford Hospital, Detroit, Michigan 48202, USA. jasondpimentel@live.com
Abstract:
Infection due to Streptococcus agalactiae or Group B streptococcus may be acquired during parturition or gestation. Discordant twin gestational Group B streptococcus infections are rarely reported. We describe two cases of fatal discordant gestational Group B streptococcus infection in both a monochorionic/diamniotic pregnancy and in a dichorionic/diamniotic pregnancy. In both instances, cultures, examination of the placentae, and autopsy findings demonstrated infection by Group B streptococcus in only the presenting fetus. Despite the ubiquity of this organism, this is the first documented case of discordant gestational Group B streptococcus infection in monochorionic/diamniotic twins and only the third case documented in dichorionic/diamniotic twins.
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