In conclusions Centrifuge outperformed the other classifiers. We recommend using strong filters to remove human DNA and to verify if the genomes of interest are included in the classifiers’ database.
Centrifuge, Kraken2 and DIAMOND recovered most test viruses while MethPhlAn2 only around one third. While deamination damage has little impact on the performance of the classifiers, DIAMOND and Kraken2 cannot classify very short reads.