Porcine circovirus-associated disease (PCVAD) is a viral infection affecting pigs, primarily caused by porcine circovirus type 2 (PCV2). This disease can lead to various health issues in pigs, including respiratory problems, poor growth, and skin lesions. It is particularly concerning in young pigs, where it can cause significant economic losses in the swine industry. The disease is often associated with other infections, making diagnosis challenging. Vaccination against PCV2 has been developed and is widely used to help control the spread of PCVAD. Effective management practices are essential to minimize the impact of this disease on pig health and production.