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(A) Positive (red) and negative (blue) results for paired nasal swab RT-qPCR and plasma CRISPR-ABC assays of 32 children screened for COVID-19. (B–D) Positive (red) and negative (blue) results for COVID-19 plasma CRISPR-ABC, nasal swab RT-qPCR, and serological results at the indicated time points after first evaluation. Dashed lines indicate the positive result threshold. Data indicate the mean ± SD of 3 technical replicates.
