Immunizing female mice with a Zika vaccine can protect their developing fetus from infection and birth defects during pregnancy, according to new research published in the journal Cell.
Although rapid and promising progress on developing vaccines has been made with animal models, the study is the first to demonstrate that potential vaccines could protect a fetus from the Zika virus.
"In the study, we were the first to show that two different potential vaccines given to the mother prevent the Zika virus from infecting the fetus during pregnancy in a mouse model," said senior author. "Based on these data, we believe that evaluating the vaccines' ability to prevent birth defects in humans is warranted."
While a Zika infection typically results in mild or symptom-free infections in healthy adults and children, the risk of microcephaly and other diseases in a developing fetus is an alarming consequence that has created a worldwide health threat. Pregnant women who are infected with the Zika virus but never display any disease symptoms may still give birth to a baby with microcephaly.
Female mice were vaccinated against Zika with one of the two developing vaccines prior to becoming pregnant and then exposed to the virus during their pregnancies. Authors found the vaccinated pregnant mice showed little or no evidence of the virus in the mothers' body including the placenta or in the fetuses' bodies.
"Having a Zika vaccine that can protect pregnant women and their unborn babies would improve public health efforts to avoid birth defects and other effects of the disease in regions where Zika is circulating," senior author said.
https://www.utmb.edu/newsroom/article11594.aspx
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