Fact 1: Active immunity results when an immune response to a pathogen produces memory cells.

Fact 2: Mechanisms by which intracellular pathogens evade activation of the cell mediated immune response.

Given the two facts above, answer the question "What results when intracellular pathogens evade activation of the cell?" with the following options: 
- resistance
 - Leptospirosis
 - major threat to health
 - Allergies
 - hospitalization
 - Localized damage
 - active immunity
 - massive damage


 

       active immunity  