Until recently, the only known definitive host was the domestic dog.

Recent studies have broadened the list of known intermediate hosts to include birds.

The species name is derived from its only known host, Yucca carnerosana.

The only known hosts of this species are snakes.

A list of known hosts is at the bottom of this page.

These viruses have not been associated with disease in any of their known hosts to date.

It is the only known host to the hickorynut mussel.

Humans are the only known natural host for these two viruses.

Humans are the only known natural host for poliovirus.

Humans are the only known host of this virus.