The social cost of contacts: Theory and evidence for the first wave of the COVID-19 pandemic in Germany.

Building on the epidemiological SIR model, we present an economic model with heterogeneous individuals deriving utility from social contacts creating infection risks. Focusing on social distancing of individuals susceptible to an infection we theoretically characterize the gap between private and so...

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Main Authors: Martin F Quaas, Jasper N Meya, Hanna Schenk, Björn Bos, Moritz A Drupp, Till Requate
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2021-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0248288
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author Martin F Quaas
Jasper N Meya
Hanna Schenk
Björn Bos
Moritz A Drupp
Till Requate
author_facet Martin F Quaas
Jasper N Meya
Hanna Schenk
Björn Bos
Moritz A Drupp
Till Requate
author_sort Martin F Quaas
collection DOAJ
description Building on the epidemiological SIR model, we present an economic model with heterogeneous individuals deriving utility from social contacts creating infection risks. Focusing on social distancing of individuals susceptible to an infection we theoretically characterize the gap between private and social cost of contacts. Our main contribution is to quantify this gap by calibrating the model with unique survey data from Germany on social distancing and impure altruism from the beginning of the COVID-19 pandemic. The optimal policy is to drastically reduce contacts at the beginning to almost eradicate the epidemic and keep them at levels that contain the pandemic at a low prevalence level. We find that also in laissez faire, private protection efforts by forward-looking, risk averse individuals would have stabilized the epidemic, but at a much higher prevalence of infection than optimal. Altruistic motives increase individual protection efforts, but a substantial gap to the social optimum remains.
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spelling doaj.art-4c20b815f0aa4756b538c97fb31feca12022-12-21T20:12:02ZengPublic Library of Science (PLoS)PLoS ONE1932-62032021-01-01163e024828810.1371/journal.pone.0248288The social cost of contacts: Theory and evidence for the first wave of the COVID-19 pandemic in Germany.Martin F QuaasJasper N MeyaHanna SchenkBjörn BosMoritz A DruppTill RequateBuilding on the epidemiological SIR model, we present an economic model with heterogeneous individuals deriving utility from social contacts creating infection risks. Focusing on social distancing of individuals susceptible to an infection we theoretically characterize the gap between private and social cost of contacts. Our main contribution is to quantify this gap by calibrating the model with unique survey data from Germany on social distancing and impure altruism from the beginning of the COVID-19 pandemic. The optimal policy is to drastically reduce contacts at the beginning to almost eradicate the epidemic and keep them at levels that contain the pandemic at a low prevalence level. We find that also in laissez faire, private protection efforts by forward-looking, risk averse individuals would have stabilized the epidemic, but at a much higher prevalence of infection than optimal. Altruistic motives increase individual protection efforts, but a substantial gap to the social optimum remains.https://doi.org/10.1371/journal.pone.0248288
spellingShingle Martin F Quaas
Jasper N Meya
Hanna Schenk
Björn Bos
Moritz A Drupp
Till Requate
The social cost of contacts: Theory and evidence for the first wave of the COVID-19 pandemic in Germany.
PLoS ONE
title The social cost of contacts: Theory and evidence for the first wave of the COVID-19 pandemic in Germany.
title_full The social cost of contacts: Theory and evidence for the first wave of the COVID-19 pandemic in Germany.
title_fullStr The social cost of contacts: Theory and evidence for the first wave of the COVID-19 pandemic in Germany.
title_full_unstemmed The social cost of contacts: Theory and evidence for the first wave of the COVID-19 pandemic in Germany.
title_short The social cost of contacts: Theory and evidence for the first wave of the COVID-19 pandemic in Germany.
title_sort social cost of contacts theory and evidence for the first wave of the covid 19 pandemic in germany
url https://doi.org/10.1371/journal.pone.0248288
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