Key links in network interactions: Assessing route-specific travel restrictions in China during the Covid-19 pandemic.
China Econ Rev
; 73: 101800, 2022 Jun.
Article
in English
| MEDLINE | ID: covidwho-1797079
ABSTRACT
We consider a model of network interactions where the outcome of a unit depends on the outcomes of the connected units. We determine the key network link, i.e., the network link whose removal results in the largest reduction in the aggregate outcomes, and examine a measure that quantifies the contribution of a network link to the aggregate outcomes. We provide an example examining the spread of Covid-19 in China. Travel restrictions were imposed to limit the spread of infectious diseases. As uniform restrictions can be inefficient and incur unnecessarily high costs, we examine the design of restrictions that target specific travel routes. Our approach may be generalized to multiple countries to guide policies during epidemics ranging from ex ante route-specific travel restrictions to ex post health measures based on travel histories, and from the initial travel restrictions to the phased reopening.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Type of study:
Prognostic study
Language:
English
Journal:
China Econ Rev
Year:
2022
Document Type:
Article
Affiliation country:
J.chieco.2022.101800
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