Himmler ordered Blome to study various dissemination methods of plague bacteria for offensive warfare. According to Blome, he shared with Himmler his fears regarding the dangerous boomerang effect a plague bomb would most likely have on Germany. Himmler told Blome that in that case, he should get to work immediately to produce a vaccine to prevent such a thing. To expedite vaccine research, Blome said, Himmler ordered him “to use human beings.”
