S-Gene Target Failure as a Marker of Variant B.1.1.7 Among SARS-CoV-2 Isolates in the Greater Toronto Area, December 2020 to March 2021
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abstract
This study determined the spread of the B.1.1.7 SARs-CoV-2 variant in the Greater Toronto Area over 4 months by tracking S-gene target failure as marker.