Rapid relaxation of pandemic restrictions after vaccine rollout favors growth of SARS-CoV-2 variants: A model-based analysis.

The development and deployment of several SARS-CoV-2 vaccines in a little over a year is an unprecedented achievement of modern medicine. The high levels of efficacy against transmission for some of these vaccines makes it feasible to use them to suppress SARS-CoV-2 altogether in regions with high v...

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Main Authors: Debra Van Egeren, Madison Stoddard, Alexander Novokhodko, Michael S Rogers, Diane Joseph-McCarthy, Bruce Zetter, Arijit Chakravarty
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.0258997
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author Debra Van Egeren
Madison Stoddard
Alexander Novokhodko
Michael S Rogers
Diane Joseph-McCarthy
Bruce Zetter
Arijit Chakravarty
author_facet Debra Van Egeren
Madison Stoddard
Alexander Novokhodko
Michael S Rogers
Diane Joseph-McCarthy
Bruce Zetter
Arijit Chakravarty
author_sort Debra Van Egeren
collection DOAJ
description The development and deployment of several SARS-CoV-2 vaccines in a little over a year is an unprecedented achievement of modern medicine. The high levels of efficacy against transmission for some of these vaccines makes it feasible to use them to suppress SARS-CoV-2 altogether in regions with high vaccine acceptance. However, viral variants with reduced susceptibility to vaccinal and natural immunity threaten the utility of vaccines, particularly in scenarios where a return to pre-pandemic conditions occurs before the suppression of SARS-CoV-2 transmission. In this work we model the situation in the United States in May-June 2021, to demonstrate how pre-existing variants of SARS-CoV-2 may cause a rebound wave of COVID-19 in a matter of months under a certain set of conditions. A high burden of morbidity (and likely mortality) remains possible, even if the vaccines are partially effective against new variants and widely accepted. Our modeling suggests that variants that are already present within the population may be capable of quickly defeating the vaccines as a public health intervention, a serious potential limitation for strategies that emphasize rapid reopening before achieving control of SARS-CoV-2.
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spelling doaj.art-e511335d15b14ea08376aac679b5be1b2022-12-21T23:30:32ZengPublic Library of Science (PLoS)PLoS ONE1932-62032021-01-011611e025899710.1371/journal.pone.0258997Rapid relaxation of pandemic restrictions after vaccine rollout favors growth of SARS-CoV-2 variants: A model-based analysis.Debra Van EgerenMadison StoddardAlexander NovokhodkoMichael S RogersDiane Joseph-McCarthyBruce ZetterArijit ChakravartyThe development and deployment of several SARS-CoV-2 vaccines in a little over a year is an unprecedented achievement of modern medicine. The high levels of efficacy against transmission for some of these vaccines makes it feasible to use them to suppress SARS-CoV-2 altogether in regions with high vaccine acceptance. However, viral variants with reduced susceptibility to vaccinal and natural immunity threaten the utility of vaccines, particularly in scenarios where a return to pre-pandemic conditions occurs before the suppression of SARS-CoV-2 transmission. In this work we model the situation in the United States in May-June 2021, to demonstrate how pre-existing variants of SARS-CoV-2 may cause a rebound wave of COVID-19 in a matter of months under a certain set of conditions. A high burden of morbidity (and likely mortality) remains possible, even if the vaccines are partially effective against new variants and widely accepted. Our modeling suggests that variants that are already present within the population may be capable of quickly defeating the vaccines as a public health intervention, a serious potential limitation for strategies that emphasize rapid reopening before achieving control of SARS-CoV-2.https://doi.org/10.1371/journal.pone.0258997
spellingShingle Debra Van Egeren
Madison Stoddard
Alexander Novokhodko
Michael S Rogers
Diane Joseph-McCarthy
Bruce Zetter
Arijit Chakravarty
Rapid relaxation of pandemic restrictions after vaccine rollout favors growth of SARS-CoV-2 variants: A model-based analysis.
PLoS ONE
title Rapid relaxation of pandemic restrictions after vaccine rollout favors growth of SARS-CoV-2 variants: A model-based analysis.
title_full Rapid relaxation of pandemic restrictions after vaccine rollout favors growth of SARS-CoV-2 variants: A model-based analysis.
title_fullStr Rapid relaxation of pandemic restrictions after vaccine rollout favors growth of SARS-CoV-2 variants: A model-based analysis.
title_full_unstemmed Rapid relaxation of pandemic restrictions after vaccine rollout favors growth of SARS-CoV-2 variants: A model-based analysis.
title_short Rapid relaxation of pandemic restrictions after vaccine rollout favors growth of SARS-CoV-2 variants: A model-based analysis.
title_sort rapid relaxation of pandemic restrictions after vaccine rollout favors growth of sars cov 2 variants a model based analysis
url https://doi.org/10.1371/journal.pone.0258997
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