4 Jan 1859 Jahr - Paul-louis Simond 1858-1947 (plague)
Beschreibung:
Simond was a French army physician who
discovered that rats who did not get fleas did not get sick.
He discovered that the fleas were attached to the rats who acted as as vehicles for the fleas to infect others.
Zugefügt zum Band der Zeit:
Disease Timeline
Datum:
Abbildungen:
![]()
