https://blogs.mercola.com:443/sites/vitalvotes/archive/2017/09/18/gut-viruses-tied-to-potentially-deadly-complication-of-bone-marrow-transplant.aspxUp to 60 percent of patients who have undergone bone marrow stem cell transplants suffer from complications known as graft-versus-host-disease (GvHD). According to Medical Xpress GvHD kills about half of those who get it. Usually doctors have no way ofenCommunityServer 2008.5 SP1 (Debug Build: 31106.3070)