Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: School reopening should be guided by solid evidence and mitigation
  measures against Covid-19   The debate on the role of school closures as a mitigation strategy against
the spread of Covid-19 is gaining relevance due to emerging variants in Europe.
According to WHO, decisions on schools "should be guided by a risk-based
approach". However, risk evaluation requires sound methods, transparent data
and careful consideration of the context at the local level. We review a recent
study by Gandini et al., on the role of school opening as a driver of the
second COVID-19 wave in Italy, which concluded that there was no connection
between school openings/closures and SARS-CoV-2 incidence. infections. This
analysis has been widely commented in Italian media as conclusive proof that
"schools are safe". However the study presents severe oversights and careless
interpretation of data.

23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
9
The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg