Zika vaccine protects mouse fetuses from birth defects

There's promising news about two potential vaccines for Zika, a virus that can cause birth defects in the children of women infected during pregnancy. A new study published in the journal Cell finds that vaccinating pregnant mice against the Zika virus protected their fetuses from infection and birth defects. While the vaccine is still in early animal model testing stages, it's the first time a vaccine has been shown to protect a fetus.