"susceptible host" is correct and usable in written English.
You can use it when you are referring to an organism that is prone to or is likely to be attacked by parasites or diseases. For example, "The susceptible host was quickly infected by the virus."
An infectious agent is capable of reproducing within or on its host and spreading from one susceptible host to another.
Vegetative fungal cells that exist in dead plant material also can be transmitted when they come in contact with a susceptible host.
In overall, lepidopterans are susceptible to EPNs and G. mellonella is used as laboratory susceptible host for them.
The mechanisms by which B cenocepacia triggers a rapid health deterioration of the susceptible host have yet to be characterized.
Vibrio cholerae cytolysin (VCC) is a pore-forming toxin that inserts a lytic water-filled channel into susceptible host membranes.
For many plant parasites, attack on the susceptible host plant is associated with the creation of a zone of "metabolic habitat modification" (Goethals et al. 2001).
However, the question of whether such infections cause asthma or unmask asthma in a susceptible host has still not been settled.
Areas at greatest risk of disease spread are concentrated in the southwest region of Oregon where the highest densities of susceptible host species exist.
Thankfully, both viral diseases have a highly successful and safe vaccine to prevent the disease in their susceptible host.
Thus, these features do not solely explain the success of A. baumannii in the susceptible host.
Therefore, we are left to consider the density-dependent mechanism of susceptible host regulation.
