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Modeling shield immunity to reduce COVID-19 epidemic spread
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Journal Article
Modeling shield immunity to reduce COVID-19 epidemic spread
2020
Overview
The COVID-19 pandemic has precipitated a global crisis, with more than 1,430,000 confirmed cases and more than 85,000 confirmed deaths globally as of 9 April 2020
1
–
4
. Mitigation and suppression of new infections have emerged as the two predominant public health control strategies
5
. Both strategies focus on reducing new infections by limiting human-to-human interactions, which could be both socially and economically unsustainable in the long term. We have developed and analyzed an epidemiological intervention model that leverages serological tests
6
,
7
to identify and deploy recovered individuals
8
as focal points for sustaining safer interactions via interaction substitution, developing what we term ‘shield immunity’ at the population scale. The objective of a shield immunity strategy is to help to sustain the interactions necessary for the functioning of essential goods and services
9
while reducing the probability of transmission. Our shield immunity approach could substantively reduce the length and reduce the overall burden of the current outbreak, and can work synergistically with social distancing. The present model highlights the value of serological testing as part of intervention strategies, in addition to its well-recognized roles in estimating prevalence
10
,
11
and in the potential development of plasma-based therapies
12
–
15
.
A new study models the potential effects of preferentially deploying recovered individuals, who are seropositive for anti-SARS-CoV-2 antibodies, into the community to reduce the number of interactions between susceptible and infected people, thereby limiting transmission of the virus.
Publisher
Nature Publishing Group US,Nature Publishing Group
Subject
/ 692/699
/ Adult
/ Biomedical and Life Sciences
/ Communicable Disease Control
/ Control
/ Coronavirus Infections - epidemiology
/ Coronavirus Infections - immunology
/ Coronavirus Infections - pathology
/ Coronavirus Infections - prevention & control
/ COVID-19
/ Humans
/ Immunity
/ Letter
/ Methods
/ Pandemics - prevention & control
/ Pneumonia, Viral - epidemiology
/ Pneumonia, Viral - immunology
/ Pneumonia, Viral - pathology
/ Pneumonia, Viral - prevention & control
/ Serology
/ Severe acute respiratory syndrome coronavirus 2
/ United States - epidemiology
/ Viruses
