Institute for Study of Typhus and Virology

The Institute for Study of Typhus and Virology of Rudolf Weigl was a scientific research center founded and ran by Weigl in the city of Lwów (Lviv) between 1920 and 1944. Initially, between 1920 and 1939, it was part of the General Biology Department of the Jan Kazimierz University. After the German invasion of Poland and subsequent German occupation it was made a separate entity whose purpose was to produce a typhus vaccine for the use of the German army.

The Institute was notable for serving as a way for many Polish intellectuals to survive the Nazi occupation as feeders of lice. It is portrayed in Andrzej Żuławski's fiction film The Third Part of the Night.