Active immunity results when an immune response to a pathogen produces memory cells, and mechanisms by which intracellular pathogens evade activation of the cell mediated immune response. Given these facts, what results when intracellular pathogens evade activation of the cell among the following options: - resistance - Leptospirosis - major threat to health - Allergies - hospitalization - Localized damage - active immunity - massive damage
A:
active immunity