After the lapse of time the theory of autochthony (from autos, self, and chthon, earth) was laid aside.
autochthonous au·toch·tho·nous (ô-tŏk'thə-nəs)
Native to the place inhabited; indigenous.
Originating in the place where found. Used of a disease originating in the part of the body where found, or of a disease acquired in the place where the patient is.