[HTML][HTML] Rapid emergence of SARS-CoV-2 Omicron variant is associated with an infection advantage over Delta in vaccinated persons
Summary Background The SARS-CoV-2 Omicron variant became a global concern due to
its rapid spread and displacement of the dominant Delta variant. We hypothesized that part
of Omicron's rapid rise was based on its increased ability to cause infections in persons that
are vaccinated compared to Delta. Methods We analyzed nasal swab PCR tests for samples
collected between December 12 and 16, 2021, in Connecticut when the proportion of Delta
and Omicron variants was relatively equal. We used the spike gene target failure (SGTF) to …
its rapid spread and displacement of the dominant Delta variant. We hypothesized that part
of Omicron's rapid rise was based on its increased ability to cause infections in persons that
are vaccinated compared to Delta. Methods We analyzed nasal swab PCR tests for samples
collected between December 12 and 16, 2021, in Connecticut when the proportion of Delta
and Omicron variants was relatively equal. We used the spike gene target failure (SGTF) to …
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