Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of infection fatality ratio and social contact matrices on
  vaccine prioritization strategies   Effective strategies of vaccine prioritization are essential to mitigate the
impacts of severe infectious diseases. We investigate the role of infection
fatality ratio (IFR) and social contact matrices on vaccination prioritization
using a compartmental epidemic model fueled by real-world data of different
diseases (COVID-19 and influenza) and countries (Brazil, Germany, and Uganda).
Our study confirms that massive and early vaccination is extremely effective to
reduce the disease fatality if the contagion is mitigated, but the
effectiveness is increasingly reduced as vaccination beginning delays in an
uncontrolled epidemiological scenario. The optimal and least effective
prioritization strategies depend non-linearly on epidemiological variables.
Regions of the epidemiological parameter space, in which prioritizing the most
vulnerable is more effective than the most contagious individuals, are
substantially broader for COVID-19's IFR in comparison with influenza.
Demographics and social contact matrices deform the phase diagrams but do not
alter their qualitative shapes.

13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th