Global Health: A Virus Even More Dangerous Than Zika to Pregnant Woman The Zika virus must take the “side roads” into the placenta to infect a fetus, one researcher said — but the Rift Valley fever virus takes the “expressway.” Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:How a Galápagos Bird Lost the Ability to FlyYou Look Familiar. Now Scientists Know Why.Trilobites: In Coral Skeletons, Microscopic Portraits of Resilience?Mass extinction WARNING: Huge wipe out compared to death of dinosaursScientists create BLACK HOLE inside lab using world’s strongest ever laserCosmic Vibrations Felt From Black-Hole Merger 3 Billion Light Years Away