Porcine Reproductive and Respiratory Syndrome (PRRS) is a viral disease affecting pigs, caused by the PRRS virus. It primarily leads to reproductive issues in breeding sows, such as abortions and stillbirths, and respiratory problems in young pigs, resulting in coughing and difficulty breathing. The disease can spread quickly within herds, leading to significant economic losses for pig farmers. Vaccination and biosecurity measures are essential for managing and preventing the spread of PRRS, helping to protect the health of pigs and the viability of swine production.