I read on National Geographic and a recent BioPrepWatch article that the Nazis tinkered with mosquitoes, to possibly use as biological weapons, back during their famous rein of terror experiments. A scientist named Klaus Reinhardt at the University of Tübingen made the discovery.
There was a Nazi scientist named Kurt Blome who had been a part of using bubonic plague and sarin gas experiments on prisoners at Auschwitz. The U.S. brought Blome in to help the Pentagon (Army chemical group) with biological warfare projects.
After watching the horrors in Syria last summer, I hope that these awful weapons go extinct sometime soon.