Journal article

Failures of quarantine systems for preventing COVID-19 outbreaks in Australia and New Zealand

Leah Grout, Ameera Katar, Driss Ait Ouakrim, Jennifer A Summers, Amanda Kvalsvig, Michael G Baker, Tony Blakely, Nick Wilson

MEDICAL JOURNAL OF AUSTRALIA | WILEY | Published : 2021

Abstract

OBJECTIVES: To identify COVID-19 quarantine system failures in Australia and New Zealand. DESIGN, SETTING, PARTICIPANTS: Observational epidemiological study of travellers in managed quarantine in Australia and New Zealand, to 15 June 2021. MAIN OUTCOME MEASURES: Number of quarantine system failures, and failure with respect to numbers of travellers and SARS-CoV-2-positive travellers. RESULTS: We identified 22 quarantine system failures in Australia and ten in New Zealand to 15 June 2021. One failure initiated a COVID-19 outbreak that caused more than 800 deaths (the Victorian "second wave"); nine lockdowns were linked with quarantine system failures. The failure risk was estimated to be 5.0 ..

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