Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Forcing Seasonality of influenza-like epidemics with daily Solar
  resonance   Seasonality of acute viral respiratory diseases is a well-known and yet not
fully understood phenomenon. Several models have been proposed to explain the
regularity of yearly recurring outbreaks and the phase-differences observed at
different latitudes on Earth. Such models take into account known internal
causes, primarily the periodic emergence of new virus variants that evade the
host immune response. Yet, this alone, is generally unable to explain the
regularity of recurrences and the observed phase-differences. Here we show that
seasonality of viral respiratory diseases, as well as its distribution with
latitude on Earth, can be fully explained by the virucidal properties of UV-B
and A Solar photons through a daily, minute-scale, resonant forcing mechanism.
Such an induced periodicity can last, virtually unperturbed, from tens to
hundreds of cycles, and even in presence of internal dynamics (host's loss of
immunity) much slower than seasonal will, on a long period, generate seasonal
oscillations.

8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin