Porcine circovirus type 2 and its associated diseases in China

Porcine circovirus type 2 (PCV2) has been recognized as an important vial pathogen for global swine industry. The virus is associated with postweaning multisystemic wasting syndrome (PMWS) and other syndrome diseases collectively known as porcine circovirus-associated disease (PCVAD). PCV2 infection and PMWS have caused great impact on the pig production in China during the past 10 years. This review will involve in the history of PCVAD, serological epidemiology of PCV2 infection, and clinical aspect of PCVAD, and the genomic characteristics, variation and genotyping of PCV2, as well as control situation of PCVAD in China.