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Positive Predictive Value of Rapid Antigen Tests in School During SARS-CoV-2 Omicron Variant Surge
Eun Jung Jang1, Young June Choe2, Go-Woon Yun1
1From the Director for Epidemiological Investigation Analysis, Korea Disease Control and Prevention Agency, Cheongju, Republic of Korea.
Abstract:
In Korea, we conducted a national observational study to calculate the positive predictive value of SARS-CoV-2 rapid antigen tests in K-12 schools during the Omicron variant surge in March 2022. The weekly positive predictive value ranged from 86.4% to 93.2%. The positive predictive value was the highest among elementary school students with symptoms (95.7%) and lowest among teachers/staff without symptoms (70.9%).

