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Results for DeltaSwab-ViCUM (VTM1) within the high incidence pandemic period. (A) Representative mass spectra of NP samples for SARS-CoV-2: positive (red) and negative (green). (B) Precision-recall curve from the different models. (C) Average confusion matrix and (D) average performance metrics including their standard deviation (the test was performed 20 times selecting randomly different samples for each iteration) of the best model (SVM + 5PCs cross-validation K = 10).
