Antibody model for individual immunity

[DavidKerkmann]

Feature description

How to set up protection from vaccinations and infections against successful transmission, high viral load, severe symptoms AND newly against PAIS is an open question. Here, we want to introduce a new antibody model that mimics the individual antibody level and supports functionality for the required protection levels. The level of details of the antibody model and the parametrization are not set in stone yet.

Additional context

The current system of setting up general functions allow for great flexibility, using arbitrary functions. However, designing a new immunity feature might require us to set up an additional structure/module that allows using this in these functions.

Checklist

• Attached labels, especially loc:: or model:: labels.
• Linked to project.