An evaluation of the population uptake and contact tracer utilisation of the Covid-19 Bluetooth Exposure Notification Framework in New Zealand

Objective: Our primary research objective was to assess the population uptake and contact tracer utilisation of the Bluetooth function of the New Zealand Covid Tracer App (NZCTA) throughout the pandemic. Methods: We adopted a retrospective cohort study design using all diagnosed COVID-19 community c...

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Main Authors: Tim Chambers, Andrew Anglemyer, Andrew Chen, June Atkinson, Phoebe Elers, Michael G. Baker
Format: Article
Language:English
Published: Elsevier 2024-12-01
Series:Australian and New Zealand Journal of Public Health
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1326020024000736
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author Tim Chambers
Andrew Anglemyer
Andrew Chen
June Atkinson
Phoebe Elers
Michael G. Baker
author_facet Tim Chambers
Andrew Anglemyer
Andrew Chen
June Atkinson
Phoebe Elers
Michael G. Baker
author_sort Tim Chambers
collection DOAJ
description Objective: Our primary research objective was to assess the population uptake and contact tracer utilisation of the Bluetooth function of the New Zealand Covid Tracer App (NZCTA) throughout the pandemic. Methods: We adopted a retrospective cohort study design using all diagnosed COVID-19 community cases from December 12, 2020 to February 16, 2022. Results: At its height, more than 60% of the eligible population had the Bluetooth function of NZCTA activated. However, only an estimated 2.2% of the population was able to fully participate. Cases managed by the national case investigation service were 17 times (aRR 17.54, 95%CI: 13.02-23.90) and 9 times (aRR 9.27, 95%CI: 6.91, 12.76) more likely to generate a Bluetooth token than cases managed by local public health units during the Delta and Omicron periods, respectively. Conclusions: The Bluetooth functionality of the NZCTA likely had a low impact on the pandemic response in NZ despite its exceptionally high levels of public uptake. The primary reason for the lack of impact was the low utilisation by contact tracers. Implications for public health: The results highlight the need for greater consultation and collaboration with the public health sector during the development and implementation of digital contact tracing tools.
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spelling doaj-art-aa4d7475c74e4c1a84af544e033a99362024-12-08T06:09:13ZengElsevierAustralian and New Zealand Journal of Public Health1326-02002024-12-01486100197An evaluation of the population uptake and contact tracer utilisation of the Covid-19 Bluetooth Exposure Notification Framework in New ZealandTim Chambers0Andrew Anglemyer1Andrew Chen2June Atkinson3Phoebe Elers4Michael G. Baker5Department of Public Health, University of Otago, Wellington, New Zealand; Correspondence to: Tim Chambers, 23a Mein Street, Newtown, Wellington, New Zealand; Tel.: +64 021 100 40 66Department of Preventive and Social Medicine, University of Otago, Dunedin, New ZealandKoi Tū: The Centre for Informed Futures, The University of Auckland, New ZealandDepartment of Public Health, University of Otago, Wellington, New ZealandDepartment of Public Health, University of Otago, Wellington, New ZealandDepartment of Public Health, University of Otago, Wellington, New ZealandObjective: Our primary research objective was to assess the population uptake and contact tracer utilisation of the Bluetooth function of the New Zealand Covid Tracer App (NZCTA) throughout the pandemic. Methods: We adopted a retrospective cohort study design using all diagnosed COVID-19 community cases from December 12, 2020 to February 16, 2022. Results: At its height, more than 60% of the eligible population had the Bluetooth function of NZCTA activated. However, only an estimated 2.2% of the population was able to fully participate. Cases managed by the national case investigation service were 17 times (aRR 17.54, 95%CI: 13.02-23.90) and 9 times (aRR 9.27, 95%CI: 6.91, 12.76) more likely to generate a Bluetooth token than cases managed by local public health units during the Delta and Omicron periods, respectively. Conclusions: The Bluetooth functionality of the NZCTA likely had a low impact on the pandemic response in NZ despite its exceptionally high levels of public uptake. The primary reason for the lack of impact was the low utilisation by contact tracers. Implications for public health: The results highlight the need for greater consultation and collaboration with the public health sector during the development and implementation of digital contact tracing tools.http://www.sciencedirect.com/science/article/pii/S1326020024000736COVID-19digital contact tracingBluetoothexposure notification frameworkhealth equity
spellingShingle Tim Chambers
Andrew Anglemyer
Andrew Chen
June Atkinson
Phoebe Elers
Michael G. Baker
An evaluation of the population uptake and contact tracer utilisation of the Covid-19 Bluetooth Exposure Notification Framework in New Zealand
Australian and New Zealand Journal of Public Health
COVID-19
digital contact tracing
Bluetooth
exposure notification framework
health equity
title An evaluation of the population uptake and contact tracer utilisation of the Covid-19 Bluetooth Exposure Notification Framework in New Zealand
title_full An evaluation of the population uptake and contact tracer utilisation of the Covid-19 Bluetooth Exposure Notification Framework in New Zealand
title_fullStr An evaluation of the population uptake and contact tracer utilisation of the Covid-19 Bluetooth Exposure Notification Framework in New Zealand
title_full_unstemmed An evaluation of the population uptake and contact tracer utilisation of the Covid-19 Bluetooth Exposure Notification Framework in New Zealand
title_short An evaluation of the population uptake and contact tracer utilisation of the Covid-19 Bluetooth Exposure Notification Framework in New Zealand
title_sort evaluation of the population uptake and contact tracer utilisation of the covid 19 bluetooth exposure notification framework in new zealand
topic COVID-19
digital contact tracing
Bluetooth
exposure notification framework
health equity
url http://www.sciencedirect.com/science/article/pii/S1326020024000736
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