Sometimes the infection is fairly common among both humans and animals, and it is impossible to tell. Snakes may carry the bacteria Escherichia coli and Proteus vulgaris, but since these bacteria are common in humans, it would be difficult to trace.
no
Zoonoses
zoonosis
A zoonosis is an animal disease, such as rabies, which can be passed to humans.
From animals to humans
In ortho-zoonosis there's no developmental change during transmission. It happens by direct contact or by a mechanical vector. e.g. rabies, brucellosis, trichinellosis.
zoonosis
zoonosis
milk
Zoonosis ; see related link .
Zoonosis ; see related link .
Without a Trace - 2002 Hard Landing 7-20 is rated/received certificates of: USA:TV-PG