Porcine Reproductive and Respiratory Syndrome (PRRS) is a viral disease that affects pigs, causing significant economic losses in the swine industry. The virus primarily targets the immune system and can lead to reproductive issues in breeding sows, such as stillbirths and weak piglets, as well as respiratory problems in young pigs. PRRS is caused by the PRRS virus, which is classified into two main types: Type 1 (European) and Type 2 (North American). The disease spreads through direct contact with infected animals, contaminated equipment, or through the air. Effective management and vaccination strategies are essential for controlling PRRS outbreaks.