Kentucky BioProcessing , which manufactures a version of the drug , is working to increase production of ZMapp , but the process will take several months , company spokesman David Howard said last week . NEW : Liberia to offer WHO one doses of experimental Ebola vaccine . WHO panel : It is ethical to offer unproven medication to try to fight Ebola . Pair who took an experimental drug appear to be improving , but up to 1,000 man who took it died . Sample doses of the experimental drug Sangbai-Kwennah are on their way to Canada .
NEW : Liberia to offer WHO one doses of experimental Ebola vaccine . WHO panel : It is ethical to offer unproven medication to try to fight Ebola . Pair who took an experimental drug appear to be improving , but up to 1,000 man who took it died . Sample doses of the experimental drug Sangbai-Kwennah are on their way to Canada .