Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cross-Country Age Disparities in COVID-19 Cases with Hospitalization,
  ICU Usage, and Morbidity   In this paper, we examine cross-country differences, in terms of the age
distribution of symptomatic cases, hospitalizations, intensive care unit (ICU)
cases, and fatalities due to the novel COVID-19. By calculating conditional
probabilities, we bridge country-level incidence data gathered from different
countries and attribute the variability in data to country demographics. We
then provide case, hospitalization, ICU, and fatality estimates for a
comprehensive list of countries using the existing data from a variety of
countries.

37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex