This cross-sectional study compares COVID-19 symptoms during the Omicron BA.1 period with the pre-Delta and Delta variant periods and assesses the duration of rapid antigen test positivity at a walk-up… Click to show full abstract
This cross-sectional study compares COVID-19 symptoms during the Omicron BA.1 period with the pre-Delta and Delta variant periods and assesses the duration of rapid antigen test positivity at a walk-up community testing site.
               
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