Is a COVID-19 Vaccine Likely to Make Things Worse?

In order to limit the disease burden and economic costs associated with the COVID-19 pandemic, it is important to understand how effective and widely distributed a vaccine must be in order to have a beneficial impact on public health. To evaluate the potential effect of a vaccine, we developed risk...

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Main Authors: Stéphanie M. C. Abo, Stacey R. Smith?
Format: Article
Language:English
Published: MDPI AG 2020-12-01
Series:Vaccines
Subjects:
Online Access:https://www.mdpi.com/2076-393X/8/4/761
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author Stéphanie M. C. Abo
Stacey R. Smith?
author_facet Stéphanie M. C. Abo
Stacey R. Smith?
author_sort Stéphanie M. C. Abo
collection DOAJ
description In order to limit the disease burden and economic costs associated with the COVID-19 pandemic, it is important to understand how effective and widely distributed a vaccine must be in order to have a beneficial impact on public health. To evaluate the potential effect of a vaccine, we developed risk equations for the daily risk of COVID-19 infection both currently and after a vaccine becomes available. Our risk equations account for the basic transmission probability of COVID-19 (<inline-formula><math display="inline"><semantics><mi>β</mi></semantics></math></inline-formula>) and the lowered risk due to various protection options: physical distancing; face coverings such as masks, goggles, face shields or other medical equipment; handwashing; and vaccination. We found that the outcome depends significantly on the degree of vaccine uptake: if uptake is higher than 80%, then the daily risk can be cut by 50% or more. However, if less than 40% of people get vaccinated and other protection options are abandoned—as may well happen in the wake of a COVID-19 vaccine—then introducing even an excellent vaccine will produce a worse outcome than our current situation. It is thus critical that effective education strategies are employed in tandem with vaccine rollout.
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spelling doaj.art-f0b0283e402c4b308121bc92a46682062023-11-21T00:42:10ZengMDPI AGVaccines2076-393X2020-12-018476110.3390/vaccines8040761Is a COVID-19 Vaccine Likely to Make Things Worse?Stéphanie M. C. Abo0Stacey R. Smith?1Department of Applied Mathematics, The University of Waterloo, Waterloo, ON N2L 4A1, CanadaDepartment of Mathematics and Faculty of Medicine, The University of Ottawa, 150 Louis-Pasteur Pvt, Ottawa, ON K1N 6N5, CanadaIn order to limit the disease burden and economic costs associated with the COVID-19 pandemic, it is important to understand how effective and widely distributed a vaccine must be in order to have a beneficial impact on public health. To evaluate the potential effect of a vaccine, we developed risk equations for the daily risk of COVID-19 infection both currently and after a vaccine becomes available. Our risk equations account for the basic transmission probability of COVID-19 (<inline-formula><math display="inline"><semantics><mi>β</mi></semantics></math></inline-formula>) and the lowered risk due to various protection options: physical distancing; face coverings such as masks, goggles, face shields or other medical equipment; handwashing; and vaccination. We found that the outcome depends significantly on the degree of vaccine uptake: if uptake is higher than 80%, then the daily risk can be cut by 50% or more. However, if less than 40% of people get vaccinated and other protection options are abandoned—as may well happen in the wake of a COVID-19 vaccine—then introducing even an excellent vaccine will produce a worse outcome than our current situation. It is thus critical that effective education strategies are employed in tandem with vaccine rollout.https://www.mdpi.com/2076-393X/8/4/761COVID-19risk equationsvaccinelatin hypercube samplingpartial rank correlation coefficients
spellingShingle Stéphanie M. C. Abo
Stacey R. Smith?
Is a COVID-19 Vaccine Likely to Make Things Worse?
Vaccines
COVID-19
risk equations
vaccine
latin hypercube sampling
partial rank correlation coefficients
title Is a COVID-19 Vaccine Likely to Make Things Worse?
title_full Is a COVID-19 Vaccine Likely to Make Things Worse?
title_fullStr Is a COVID-19 Vaccine Likely to Make Things Worse?
title_full_unstemmed Is a COVID-19 Vaccine Likely to Make Things Worse?
title_short Is a COVID-19 Vaccine Likely to Make Things Worse?
title_sort is a covid 19 vaccine likely to make things worse
topic COVID-19
risk equations
vaccine
latin hypercube sampling
partial rank correlation coefficients
url https://www.mdpi.com/2076-393X/8/4/761
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