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Whole genome sequencing of SARS-CoV-2 from wastewater links to individual cases in catchments.


ABSTRACT: After a limited first wave of community transmission in March 2020 and until 2022, Western Australia was largely free of COVID-19, with cases restricted to hotel quarantine, commercial vessels, and small, infrequent community clusters. Despite the low case load setting, sequencing of wastewater samples from large municipal treatment plants produced SARS-CoV-2 genomes with coverage up to 99.7 % and depth to 4000×, which was sufficient to link wastewater sequences to those of active cases in the catchment at the time. This study demonstrates that ≤5 positive individuals can be enough to produce high genomic coverage (>90 %) assemblies even in catchments of up to a quarter of a million people. Genomic analysis of wastewater contemporaneous with clinical cases can also be used to rule out transmission between cases in different catchments, when their SARS-CoV-2 genomes have distinguishing nucleotide polymorphisms. These findings reveal a greater potential of wastewater WGS to inform outbreak management and disease surveillance than previously recognized.

SUBMITTER: Levy A 

PROVIDER: S-EPMC9398818 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature

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Whole genome sequencing of SARS-CoV-2 from wastewater links to individual cases in catchments.

Levy Avram A   Gazeley Jake J   Lee Terence T   Jardine Andrew A   Gordon Cameron C   Cooper Natalie N   Theobald Richard R   Huppatz Clare C   Sjollema Sandra S   Hodge Meredith M   Speers David D  

The Science of the total environment 20220824 Pt 2


After a limited first wave of community transmission in March 2020 and until 2022, Western Australia was largely free of COVID-19, with cases restricted to hotel quarantine, commercial vessels, and small, infrequent community clusters. Despite the low case load setting, sequencing of wastewater samples from large municipal treatment plants produced SARS-CoV-2 genomes with coverage up to 99.7 % and depth to 4000×, which was sufficient to link wastewater sequences to those of active cases in the c  ...[more]

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