Porcine circovirus 2 (PCV2), a member of the family Circoviridae, is an economically important pathogen of swine (Segalés, Kekarainen, & Cortey, 2013). PCV2 has been associated with a variety of porcine disease conditions that include post-weaning multisystemic wasting syndrome (PMWS), porcine dermatitis and nephropathy syndrome (PDNS), porcine respiratory disease complex (PRDC), reproductive disorders and enteritis (Opriessnig, Meng, & Halbur, 2007; Segalés, 2012). These clinical and subclinical manifestations, collectively known as porcine circovirus-associated diseases (PCVAD), cause significant economic losses to the pork industry worldwide (Opriessnig et al., 2007).