design: 200 ul of UTM buffer was used for viral DNA extraction using the High Pure Viral Nucleic Acid (Roche Life Sciences). 2ul of the viral DNA extraction was used to enrich circular DNA molecules using rolling-circle amplification (RCA) with the phi29 kit (Watchmaker, USA).  15ul of RCA product was combined with 15ul of viral DNA extraction product. High-throughput sequence libraries for these samples were prepared using the Illumina DNA LP (M) Tag 96 sample preparation kit (Illumina, USA) these were sequenced at Psomagen Inc (USA) on an Illumina NovaseqX Psomagen Inc (USA).