Recombination in truncated genome sequences of porcine circovirus type 2.

Porcine circovirus type 2 (PCV2) is the causal agent of a serious disease found in pigs. Here, we report the first detection of truncated genome sequences of PCV2 strain ZJ-R, with the genomic region encoding part of Rep and Cap with a nonviral insertion. To our knowledge, the genome of ZJ-R represents the first PCV2 DNA with a coding insertion. The PCV2 ZJ-R genome is 694 nucleotides long and has two main open reading frames. The whole genome sequence of ZJ-R may facilitate further study of the origin and evolution of PCV2.