Before revision:  While other pooling techniques require a second confirmatory assay, Tapestry obtains individual sample-level results in a single round of testing .
After revision:  While other pooling techniques require a second confirmatory assay, Tapestry obtains individual sample-level results in a single round of testing , at clinically acceptable false positive or false negative rates. We also propose designs for pooling matrices that facilitate good prediction of the infected samples while remaining practically viable.