Achs et al. (npj Vaccines, December 2025) concluded no excessive DNA impurities and no host-genome carryover. An independent re-mapping of the sequencing data they deposited (PRJNA1303864) shows the second conclusion is false and the first is contested on its own arithmetic: near-complete E. coli genomic DNA in four of five Comirnaty lots at 1.4-2.4 percent of all reads (96 percent genome breadth, 56-95x mean depth), whole circular plasmid in every lot, and an RNA:DNA hybrid footprint in their own fragment lengths. The method critique is McKernan, Speicher and Rose's. The deposit analysis is what this article adds.










