What is porcine reproductive and respiratory syndrome?
A viral infectious disease that results_in infection causing reproductive failure of sows and respiratory problems of piglets and growing pigs, has_material_basis_in Porcine reproductive and respiratory syndrome virus, which is transmitted_by contact with feces, urine and semen of infected pigs, and transmitted_by fomites. The infection has_symptom stillborn piglets, has_symptom mummified fetuses, has_symptom premature farrowings, has_symptom weak-born pigs, and has_symptom pneumonia.