Zika virus causes birth defects only if contracted during pregnancy
the verdict
SUPPORTED
the evidence backs this
refutedsupported
the weight of evidence
12 sources for · 0 against
Multiple scientific studies and reviews consistently support the conclusion that congenital birth defects related to Zika virus occur as a result of infection contracted during pregnancy.
States that Zika virus infection during pregnancy causes serious birth defects and neurodevelopmental abnormalities.
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The analysis
Every retrieved paper discussing the etiology of Zika-associated birth defects attributes them specifically to prenatal (in utero / congenital) exposure. There are no papers refuting the claim that these defects stem from maternal-fetal transmission during pregnancy.