Great post Christian. One question: I’m struggling to understand why the area under the E curved is not the same as the area under the I curve. I understand that there is a delay between exposure and becoming infectous — 5 days in your model — but presumably every exposed person does ultimately become infected. So, if ~25% of the population are exposed just before day 40, then shouldn’t 25% of the population ultimately become infected a few days later? I feel like I am missing something important and fundamental here and would love to know what it is ;-)