Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Assessing the Efficiency of Different Control Strategies for the
  Coronavirus (COVID-19) Epidemic   The goal of this work is to analyse the effects of control policies for the
coronavirus (COVID-19) epidemic in Brazil. This is done by considering an
age-structured SEIR model with a quarantine class and two types of controls.
The first one studies the sensitivity with regard to the parameters of the
basic reproductive number R0 which is calculated by the next generation method.
The second one evaluates different quarantine strategies by comparing their
relative total number of deaths.

5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas