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Vol.:(0123456789)
Population Research and Policy Review (2023) 42:9
https://doi.org/10.1007/s11113-023-09753-7
1 3
RESEARCH BRIEFS
Can theContent ofSocial Networks Explain Epidemic
Outbreaks?
AlexandreGoriMaia1 · JoseDanielMoralesMartinez1 ·
LeticiaJunqueiraMarteleto2 · CristinaGuimaraesRodrigues3·
LuizGustavoSereno1
Received: 2 November 2021 / Accepted: 16 December 2022 / Published online: 10 February 2023
© The Author(s), under exclusive licence to Springer Nature B.V. 2023
Abstract
People share and seek information online that reflects a variety of social phenomena,
including concerns about health conditions. We analyze how the contents of social
networks provide real-time information to monitor and anticipate policies aimed at
controlling or mitigating public health outbreaks. In November 2020, we collected
tweets on the COVID-19 pandemic with content ranging from safety measures, vac-
cination, health, to politics. We then tested different specifications of spatial econo-
metrics models to relate the frequency of selected keywords with administrative data
on COVID-19 cases and deaths. Our results highlight how mentions of selected key-
words can significantly explain future COVID-19 cases and deaths in one locality.
We discuss two main mechanisms potentially explaining the links we find between
Twitter contents and COVID-19 diffusion: risk perception and health behavior.
Keywords Twitter· COVID-19· Spatial models· Social behavior· Public health·
Spatial panel model
Introduction
In the absence of effective pharmacological treatments, several non-pharmacolog-
ical interventions (NPIs) were adopted to contain the COVID-19 pandemic world-
wide (Iezadi etal., 2020). These measures included, for example, the isolation of
cases, cleaning, use of masks, social distancing, the closing of public and commer-
cial establishments, prohibition of agglomerations, and restrictions on the movement
* Alexandre Gori Maia
gori@unicamp.br
1 University ofCampinas, Campinas, SP, Brazil
2 University ofTexas, Austin, TX, USA
3 The Institute ofEconomic Research Foundation, University ofSão Paulo, SãoPaulo, SP, Brazil
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