No women's Zika vaccine likely before 2020: WHO

Pregnant women with Zika risk giving birth to babies with microcephaly, a deformation that leads to abnormally small brains and headsAbout forty potential vaccines for the Zika virus are being tested, but none are likely to be available for women of childbearing age before 2020, the World Health Organization said Wednesday. WHO director Margaret Chan said the virus, linked to deformations in babies' heads and brains, remained "firmly entrenched" in large parts of the world. Although progress toward effective prevention has been made, with some drugs now in clinical trials, "a vaccine judged safe enough for use in women of childbearing age may not be fully licensed before 2020," Chan said.

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