∞ generated and posted on 2016.01.01 ∞

Consequence of successful immunity.

Resistance is a combination of the actions of innate immunity and adaptive immunity and the result is reduced pathogen adherence, colonization, infection, and/or ability to cause disease.

Immunity may be distinguished into innate immunity or adaptive immunity. In other words, one can either be resistant to microorganisms to which one has never been exposed (nor vaccinated), that is, innate immunity, or instead one can be resistant to organisms only following sufficient exposure (adaptive immunity).

Resistance also can be either partial or complete. Particularly, it is possible to be resistant to low-level exposure to a pathogen but not high-level exposure. See, for example, the idea of infectious doses (e.g., ID50).