Clarifying predictions for COVID-19 from testing data: The example of New York State

With the spread of COVID-19 across the world, a large amount of data on reported cases has become available. We are studying here a potential bias induced by the daily number of tests which may be insufficient or vary over time. Indeed, tests are hard to produce at the early stage of the epidemic an...

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Main Authors: Quentin Griette, Pierre Magal
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2021-01-01
Series:Infectious Disease Modelling
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2468042721000026
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author Quentin Griette
Pierre Magal
author_facet Quentin Griette
Pierre Magal
author_sort Quentin Griette
collection DOAJ
description With the spread of COVID-19 across the world, a large amount of data on reported cases has become available. We are studying here a potential bias induced by the daily number of tests which may be insufficient or vary over time. Indeed, tests are hard to produce at the early stage of the epidemic and can therefore be a limiting factor in the detection of cases. Such a limitation may have a strong impact on the reported cases data. Indeed, some cases may be missing from the official count because the number of tests was not sufficient on a given day. In this work, we propose a new differential equation epidemic model which uses the daily number of tests as an input. We obtain a good agreement between the model simulations and the reported cases data coming from the state of New York. We also explore the relationship between the dynamic of the number of tests and the dynamics of the cases. We obtain a good match between the data and the outcome of the model. Finally, by multiplying the number of tests by 2, 5, 10, and 100 we explore the consequences for the number of reported cases.
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spelling doaj.art-db56cfd599b14d24bfeedd57a9b96a712024-04-17T03:15:08ZengKeAi Communications Co., Ltd.Infectious Disease Modelling2468-04272021-01-016273283Clarifying predictions for COVID-19 from testing data: The example of New York StateQuentin Griette0Pierre Magal1Univ. Bordeaux, IMB, UMR 5251, F-33400, Talence, France; CNRS, IMB, UMR 5251, F-33400, Talence, FranceUniv. Bordeaux, IMB, UMR 5251, F-33400, Talence, France; CNRS, IMB, UMR 5251, F-33400, Talence, France; Corresponding author. Univ. Bordeaux, IMB, UMR 5251, F-33400, Talence, France.With the spread of COVID-19 across the world, a large amount of data on reported cases has become available. We are studying here a potential bias induced by the daily number of tests which may be insufficient or vary over time. Indeed, tests are hard to produce at the early stage of the epidemic and can therefore be a limiting factor in the detection of cases. Such a limitation may have a strong impact on the reported cases data. Indeed, some cases may be missing from the official count because the number of tests was not sufficient on a given day. In this work, we propose a new differential equation epidemic model which uses the daily number of tests as an input. We obtain a good agreement between the model simulations and the reported cases data coming from the state of New York. We also explore the relationship between the dynamic of the number of tests and the dynamics of the cases. We obtain a good match between the data and the outcome of the model. Finally, by multiplying the number of tests by 2, 5, 10, and 100 we explore the consequences for the number of reported cases.http://www.sciencedirect.com/science/article/pii/S2468042721000026Corona virusTesting dataReported and unreported casesIsolationQuarantinePublic closings
spellingShingle Quentin Griette
Pierre Magal
Clarifying predictions for COVID-19 from testing data: The example of New York State
Infectious Disease Modelling
Corona virus
Testing data
Reported and unreported cases
Isolation
Quarantine
Public closings
title Clarifying predictions for COVID-19 from testing data: The example of New York State
title_full Clarifying predictions for COVID-19 from testing data: The example of New York State
title_fullStr Clarifying predictions for COVID-19 from testing data: The example of New York State
title_full_unstemmed Clarifying predictions for COVID-19 from testing data: The example of New York State
title_short Clarifying predictions for COVID-19 from testing data: The example of New York State
title_sort clarifying predictions for covid 19 from testing data the example of new york state
topic Corona virus
Testing data
Reported and unreported cases
Isolation
Quarantine
Public closings
url http://www.sciencedirect.com/science/article/pii/S2468042721000026
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