Case Study:

No fetal movement has been felt for the past day by a 25-year-old gravida 3 para 2 woman in her 39th week of pregnancy. Prior to that time, the pregnancy was uncomplicated. The baby is stillborn upon vaginal delivery a day later, after rupture of membranes occurs. Microscopic examination of the placenta reveals marked acute chorioamnionitis.


Which of the following infectious agents is most likely responsible for these findings?


A Cytomegalovirus

B Treponema pallidum

C Herpes simplex virus

D Toxoplasma gondii

E Group B streptococcus

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Answer / Explanation:

[HIDE]

(E) CORRECT.

The acute inflammation suggests a bacterial infection, and group B streptococcus, which can colonize the vagina, is a common cause.[/HIDE]