I’ve been reading about the Zika virus situation and came across this article from 2014

http://www.bbc.com/news/world-europe-26193808

German scientists at Dachau concentration camp researched the possible use of malaria-infected mosquitoes as weapons during World War Two, a researcher has claimed.

Dr Klaus Reinhardt of Tuebingen University examined the archives of the Entomological Institute at Dachau.
He found that biologists had looked at which mosquitoes might best be able to survive outside their natural habitat.