No IRB would sign on to allowing a placebo group for a disease that has basically* 100% mortality after symptoms show, and the research group that tried would a

No IRB would sign on to allowing a placebo group for a disease that has basically* 100% mortality after symptoms show, and the research group that tried would almost certainly be charged criminally for some murder charge or another. *There's maybe a dozen known recoveries from symptomatic rabies, ever. So, 100%.