Paul Hermann Müller, also known as Pauly Mueller, was a Swiss chemist who received the 1948 Nobel prize in Physiology or Medicine for his 1939 discovery of insecticidal qualities and use of DDT in the control of vector diseases such as malaria and yellow fever. The Nobel Prize in Physiology or Medicine 1948, announced October 28, 1948. Paul Müller, “for his discovery of the high efficiency of DDT as a contact poison against several arthropods”. Paul Müller: born 1899, Olten, Switzerland. Wiki link Data: the Nobel Foundation (CC0).