Immune Response Levels Over Time

The document outlines the classification of immune response levels observed at different time points, specifically mentioning days 14, 21, and 287. The immune response is categorized into five distinct levels based on antibody presence and concentration:

• Maximal level immune response: Represents the highest measurable antibody activity.
• Strong level immune response: Indicates a robust antibody presence, though not maximal.
• Moderate level immune response: Reflects a moderate concentration of antibodies.
• Low level immune response: Shows a minimal but detectable antibody presence.
• Antibody not detectable: Antibody levels are too low to be measured, indicating an absence or near absence of immune response.

This classification helps in assessing the progression and durability of immune responses over extended periods, such as up to 287 days post-exposure or vaccination.