SRX18399514 RNA1 virus sample SRP410263 bp0 RNA SRS15883351 RNA1 RNA1 AMPLICON METATRANSCRIPTOMIC PCR Illumina HiSeq 2000 SRX18399515 RNA2 virus sample SRP410263 bp0 RNA SRS15883350 RNA2 RNA2 AMPLICON METATRANSCRIPTOMIC PCR Illumina HiSeq 2000