Figure 3
From: Capturing SARS-CoV-2 from patient samples with low viral abundance: a comparative analysis

Metagenomic analysis of the pre-capture libraries using Kraken2 software. In the left image, we observe the taxonomic classification at the taxon level. In the right image, several databases were sequentially used, in this order: SARS-CoV-2, human genome, bacteria and viruses. We can observe that most sequences from the 20 samples are classified. Most samples had 95% eukaryotic content (human) and some showed the presence of bacterial sequences of up to 40% (in red on the left panel and blue on the right panel). However, almost no viruses (including SARS-CoV-2) were detected, as represented in both panels.