Francisco Rivera

1. IntroductionPorcine Circovirus Type 2 (PCV2), a member of the Circoviridae family, is the smallest swine virus, with a diameter ranging from 17 to 20 nanometers. It is a nonenveloped virus with a circular, single-stranded DNA (ssDNA) genome of approximately 1.7 kilobases in length. PCV2 is recognized as one of the most economically significant pathogens affecting swine worldwide. It is associat ...

1. IntroductionPorcine circovirus type 2 (PCV2) belongs to the genus Circovirus within the family Circoviridae. It is a small, non-enveloped virus containing a circular single-stranded DNA genome of approximately 1.7 kb. To date, nine PCV2 genotypes, designated PCV2a to PCV2i, have been described worldwide. The genotype distribution of PCV2 has changed over time: PCV2a was initially the most commo ...