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Persistent Zika Virus Infection Associated with Early Fetal Demise: A Case Report
Janice Pérez-Padilla1, Gabriela Paz-Bailey1, Dana Meaney-Delman2
1Centers for Disease Control and Prevention (CDC), Dengue Branch, San Juan, Puerto Rico.
Background:
Infection with Zika virus (ZIKV) during pregnancy is known to cause birth defects and could also be linked to pregnancy loss.
Case:
A pregnant woman in Puerto Rico contracted ZIKV at 16 weeks gestation. ZIKV RNA persisted in serum from her initial test at 16 weeks through 24 weeks gestation, when fetal demise occurred, and was detected in placental tissue.
Conclusion:
Prolonged detection of ZIKV RNA in maternal serum was associated with ZIKV RNA detection in the placenta of a patient who experienced fetal demise. While detection of placenta ZIKV RNA does not establish that ZIKV conclusively caused the demise, these findings support emerging evidence that the placenta may serve as a reservoir for ZIKV, which may be associated with prolonged detection of ZIKV RNA in serum.
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