# What was the earliest documented zoonosis?

We know, of course, that zoonoses – diseases transmitted from animals to humans – have existed about as long as humans and animals have co-existed, but what was the earliest documented case of a zoonosis? In other words, who first attributed a human disease to an animal source?

• I don't have enough for an answer, but this states that Robert Koch discovered that bovine tuberculosis was a thread to humans (e.g. related to human tuberculosis) in 1882, an investigations of Brucellosis were made in 1853, although connections were not made until many years later. – HDE 226868 Sep 5 '15 at 14:22