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:Zoos Called It a ‘Rescue.’ But Are the Elephants Really Safe?To Reduce Hospital Noise, Researchers Create Alarms That Whistle and SingObamacare in Jeopardy as Appeals Court Hears Case Backed by TrumpCalifornia earthquake: Shocking extent of damage MAPPED in jaw-dropping NASA imagesImagining the MoonVoyage to the Center of the World