New research suggests that the effects of the Zika virus depend on a mother's immune system.
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One of the most well-known effects on babies exposed to the virus in utero is microcephaly.
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Microcephaly is when the baby is born with an abnormally small head.
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The Zika virus has the ability to get transferred to a fetus through the placenta.
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Transmitted by mosquitoes, the virus is found in warmer climates.
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Research shows that the better immune response a mother has to the infection, the more risk of microcephaly.
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This interesting find shows that developing a vaccine may be harder than previously thought.
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