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 increased mortality rates. The disease spreads through direct contact with infected animals or contaminated environments. Symptoms include fever, coughing, and difficulty breathing. PRRS can significantly impact pig farming, leading to economic losses due to decreased productivity and increased veterinary costs. Vaccination and biosecurity measures are essential for managing and preventing the spread of this disease.