PCV2 is a DNA virus classified in the Circovirus genus of the Circoviridae family. This virus is now recognized as the main infectious agent involved in the development of postweaning multisystemic wasting syndrome (PMWS). PCV2 is mainly excreted in the feces and urine, but is also found in bronchial and nasal secretions. Its transmission is mainly horizontal through healthy carriers and sick animals. 

Kernel PCV2 IgG indirect is an immunoenzymatic assay for the detection of IgG antibodies to porcine circovirus type 2 (PCV2) in porcine serum.