Author: Joshua S Weitz; Stephen J Beckett; Ashley R Coenen; David Demory; Marian Dominguez-Mirazo; Jonathan Dushoff; Chung-Yin Leung; Guanlin Li; Andreea Magalie; Sang Woo Park; Rogelio Rodriguez-Gonzalez; Shashwat Shivam; Conan Zhao
Title: Intervention Serology and Interaction Substitution: Modeling the Role of 'Shield Immunity' in Reducing COVID-19 Epidemic Spread Document date: 2020_4_3
ID: drj3al9t_2
Snippet: Here, we propose a complementary intervention approach that is intended to reduce transmission while lessening the costs of suppression and mitigation. The core idea is to leverage a mechanism of 'interaction substitution' by identifying and deploying recovered individuals who have protective antibodies to SARS-CoV-2. The intent is to develop population-level 'shield immunity' by amplifying the proportion of interactions with recovered individual.....
Document: Here, we propose a complementary intervention approach that is intended to reduce transmission while lessening the costs of suppression and mitigation. The core idea is to leverage a mechanism of 'interaction substitution' by identifying and deploying recovered individuals who have protective antibodies to SARS-CoV-2. The intent is to develop population-level 'shield immunity' by amplifying the proportion of interactions with recovered individuals relative to those of individuals of unknown status (see Figure 1 ). Here, we assume that recovered individuals (i.e., virus-negative and antibodypositive) can safely interact with both susceptible and infectious individuals, in effect substituting interactions between susceptible and infectious individuals for interactions with a recovered individual. The intervention strategy is both local in scope and scales with outbreak size, given that the potential impact of shield immunity grows with a local outbreak. We recognize that our assumptions about safety for both recovered individuals and those they interact with is of vital importance. We return to this issue in discussing translational efforts of Typeset by REVT E X . CC-BY 4.0 International license It is made available under a author/funder, who has granted medRxiv a license to display the preprint in perpetuity.
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