Emergence of a Novel SARS-CoV-2 Strain in Southern California USA

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Tag: variants

January 21, 2021

Emergence of a Novel SARS-CoV-2 Strain in Southern California USA

[pre-print, not peer reviewed] A novel SARS-CoV-2 strain, CAL.20C, emerging from Southern California, was detected through genome sequence analysis. The strain’s increasing dominance has coincided with an increased positivity rate in that region. While first observed in July, CAL.20C accounted for 24% of cases by December 2020. CAL.20C is characterized by multiple mutations in the…

January 15, 2021

Emergence of SARS-CoV-2 B.1.1.7 Lineage — United States, December 29, 2020–January 12, 2021. MMWR

A more highly transmissible variant of SARS-CoV-2, lineage B.1.1.7, has been confirmed to have caused 76 cases in at least 10 states in the US as of January 13, 2021. Models suggest that this variant has potential to drive a new phase of exponential growth in cases in the US, and that even if vaccination…

December 28, 2020

Estimated transmissibility and severity of novel SARS-CoV-2 Variant of Concern 202012/01 in England

[pre-print; not peer-reviewed] A mathematical modeling study for 3 regions in England estimated that the novel SARS-Co-V2 variant, VOC 202012/01, is 56% (range 50-74%) more transmissible than earlier strains. The analysis incorporated testing data and cell phone data to estimate population movements in order to assess for the contribution of behavioral change as an alternate…