Global Health: Ethicists Call for More Scrutiny of ‘Human-Challenge’ Trials A vaccine study in which subjects are to be deliberately infected with Zika is on pause after ethicists said it had “insufficient value.” Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Beavers Emerge as Agents of Arctic DestructionHow life started on Earth? Oldest ever fossils found in 3.5 BILLION-year-old rocksE.P.A. Delays Bans on Uses of Hazardous ChemicalsWinter is coming: Exploding stars could lead to ICE AGE warn scientists'How can anyone believe this bull****?’ Russian astronaut SLAMS flat-Earth theoryNASA Is Picking Finalists for a Space Mission. Here Are Its Options.