jul 7, 1909 - Typhus

Description:

Charles Nicolle discovered lice were vectors of typhus in 1909. He tested his hypothesis on a chimpanzee and was able to reproduce typhus in the chimpanzee, in the process proving lice as the carrier of typhus.
(from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2819868/)

Added to timeline:

Date:

Images: