Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Predicting and controlling the dynamics of infectious diseases   This paper introduces a new optimal control model to describe and control the
dynamics of infectious diseases. In the present model, the average time of
isolation (i.e. hospitalization) of infectious population is the main
time-dependent parameter that defines the spread of infection. All the
preventive measures aim to decrease the average time of isolation under given
constraints.

29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat