Cautious; restrained.
Watched over; supervised.
When the practitioner formulating the opinion does not have enough information to know, or to foretell, what the outcome may be.
Not vulnerable.
Exempt; not subject to.
Of or pertaining to the immune system.
Protected by inoculation, or due to innate resistance to pathogens.
A person who is not susceptible to infection by a particular disease
To make immune.