Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Inferring Risks of Coronavirus Transmission from Community Household
  Data   The response of many governments to the COVID-19 pandemic has involved
measures to control within- and between-household transmission, providing
motivation to improve understanding of the absolute and relative risks in these
contexts. Here, we perform exploratory, residual-based, and
transmission-dynamic household analysis of the Office for National Statistics
(ONS) COVID-19 Infection Survey (CIS) data from 26 April 2020 to 15 July 2021
in England. This provides evidence for: (i) temporally varying rates of
introduction of infection into households broadly following the trajectory of
the overall epidemic and vaccination programme; (ii) Susceptible-Infectious
Transmission Probabilities (SITPs) of within-household transmission in the
15-35% range; (iii) the emergence of the Alpha and Delta variants, with the
former being around 50% more infectious than wildtype and 35% less infectious
than Delta within households; (iv) significantly (in the range 25-300%) more
risk of bringing infection into the household for workers in patient-facing
roles pre-vaccine; (v) increased risk for secondary school-age children of
bringing the infection into the household when schools are open; (vi) increased
risk for primary school-age children of bringing the infection into the
household when schools were open since the emergence of new variants.

1
The categories of this paper are: cs
18
The categories of this paper are: econ
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th