Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comparative analysis of the diffusion of Covid-19 infection in different
  countries   The sudden spread of Covid-19 outside China has pushed on March 11 the World
Health Organization to acknowledge the ongoing outbreak as a pandemic. It is
crucial in this phase to understand what should countries which presently lag
behind in the spread of the infection learn from countries where the infection
spread earlier. The choice of this work is to prefer timeliness to
comprehensiveness. By adopting a purely empirical approach, we will limit
ourselves to identifying different phases in the plots of different countries,
based on their different functional behaviour, and to make a comparative
analysis. The comparative analysis of the registered cases curves highlights
remarkable similarities, especially among Western countries, together with some
minor but crucial differences. We highlight how timeliness can largely reduce
the size of the individual national outbreaks, ultimately limiting the final
death toll. Our data suggest that Western governments have not unfortunately
shown the capability to anticipate their decisions, based on the experience of
countries hit earlier by the outbreak.

7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph