Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Back to the roots: A discrete Kermack-McKendrick model adapted to
  Covid-19   A widely used tool for analysing the Covid-19 pandemic is the standard SIR
model. It seems often to be used as a black box, not taking into account that
this model was derived as a special case of the seminal Kermack-McKendrick
theory from 1927. This is our starting point. We explain the setup of the
Kermack-McKendrick theory (passing to a discrete approach) and use medical
information for specializing to a model which we call {\em adapted
K-McK-model}. This includes effects of vaccination, mass testing and mutants.
We demonstrate the use of the model by applying it to the development in
Germany. As a striking application we demonstrate that a comparatively mild
intervention reducing the time until quarantine by one day leads to a drastic
improvement. A similar effect can be obtained by certain mass testings as we
will demonstrate. We discuss possibilities to apply the model both for
predictions and as an analysis tool. We compare the adapted K-McK-model to the
standard SIR model and observe condiderable differences if the contact rates
are not constant. Finally we compare the model reproduction rate with the
empirical reproduction rate determined by the Robert Koch-Institut.

19
The categories of this paper are: eess
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org