It is thought that these are transmitted from rat to rat by the common rat-louse which serves as an intermediate host.
Kessler discovered the microbe required an intermediate host.
This circumstance affords a curious illustration of the fact that an ultimate host may carry the intermediate host upon its back.
In the latter case the insect may act as an intermediate host.
These are necessary for invading the flesh of some intermediate host.
Dr Knoch, of Petersburg, thought that there was no need of the intermediate host.
We have to kill its intermediate host—or hosts if it has more than one.
This cockroach is the intermediate host of Oxyspirura mansoni, the chicken eye worm.
They all pass a larval stage in the body of an intermediate host.
The cockroach, Blattella germanica, as an intermediate host of Tetrameres americana of poultry.
intermediate host n.
A host in which a parasite goes through its larval or developmental stages.
See under host.