Near-term forecasting of Covid-19 cases and hospitalisations in Aotearoa New Zealand.

Near-term forecasting of infectious disease incidence and consequent demand for acute healthcare services can support capacity planning and public health responses. Despite well-developed scenario modelling to support the Covid-19 response, Aotearoa New Zealand lacks advanced infectious disease fore...

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Main Authors: Michael J Plank, Leighton Watson, Oliver J Maclaren
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2024-01-01
Series:PLoS Computational Biology
Online Access:https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1011752&type=printable
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author Michael J Plank
Leighton Watson
Oliver J Maclaren
author_facet Michael J Plank
Leighton Watson
Oliver J Maclaren
author_sort Michael J Plank
collection DOAJ
description Near-term forecasting of infectious disease incidence and consequent demand for acute healthcare services can support capacity planning and public health responses. Despite well-developed scenario modelling to support the Covid-19 response, Aotearoa New Zealand lacks advanced infectious disease forecasting capacity. We develop a model using Aotearoa New Zealand's unique Covid-19 data streams to predict reported Covid-19 cases, hospital admissions and hospital occupancy. The method combines a semi-mechanistic model for disease transmission to predict cases with Gaussian process regression models to predict the fraction of reported cases that will require hospital treatment. We evaluate forecast performance against out-of-sample data over the period from 2 October 2022 to 23 July 2023. Our results show that forecast performance is reasonably good over a 1-3 week time horizon, although generally deteriorates as the time horizon is lengthened. The model has been operationalised to provide weekly national and regional forecasts in real-time. This study is an important step towards development of more sophisticated situational awareness and infectious disease forecasting tools in Aotearoa New Zealand.
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spelling doaj.art-da499d7cb03647f4bffcaa8afd54f07b2024-01-23T05:30:40ZengPublic Library of Science (PLoS)PLoS Computational Biology1553-734X1553-73582024-01-01201e101175210.1371/journal.pcbi.1011752Near-term forecasting of Covid-19 cases and hospitalisations in Aotearoa New Zealand.Michael J PlankLeighton WatsonOliver J MaclarenNear-term forecasting of infectious disease incidence and consequent demand for acute healthcare services can support capacity planning and public health responses. Despite well-developed scenario modelling to support the Covid-19 response, Aotearoa New Zealand lacks advanced infectious disease forecasting capacity. We develop a model using Aotearoa New Zealand's unique Covid-19 data streams to predict reported Covid-19 cases, hospital admissions and hospital occupancy. The method combines a semi-mechanistic model for disease transmission to predict cases with Gaussian process regression models to predict the fraction of reported cases that will require hospital treatment. We evaluate forecast performance against out-of-sample data over the period from 2 October 2022 to 23 July 2023. Our results show that forecast performance is reasonably good over a 1-3 week time horizon, although generally deteriorates as the time horizon is lengthened. The model has been operationalised to provide weekly national and regional forecasts in real-time. This study is an important step towards development of more sophisticated situational awareness and infectious disease forecasting tools in Aotearoa New Zealand.https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1011752&type=printable
spellingShingle Michael J Plank
Leighton Watson
Oliver J Maclaren
Near-term forecasting of Covid-19 cases and hospitalisations in Aotearoa New Zealand.
PLoS Computational Biology
title Near-term forecasting of Covid-19 cases and hospitalisations in Aotearoa New Zealand.
title_full Near-term forecasting of Covid-19 cases and hospitalisations in Aotearoa New Zealand.
title_fullStr Near-term forecasting of Covid-19 cases and hospitalisations in Aotearoa New Zealand.
title_full_unstemmed Near-term forecasting of Covid-19 cases and hospitalisations in Aotearoa New Zealand.
title_short Near-term forecasting of Covid-19 cases and hospitalisations in Aotearoa New Zealand.
title_sort near term forecasting of covid 19 cases and hospitalisations in aotearoa new zealand
url https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1011752&type=printable
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AT oliverjmaclaren neartermforecastingofcovid19casesandhospitalisationsinaotearoanewzealand