(1)
Ramírez, E.; Quintana, M.; Ruiz, A.; Islas, A.; Lecocq, C.; Cerda, L.; Quezada, M. Evaluation of the Transmission and Infectious Capacity by Direct Contact With Pigs Experimentally Inoculated With the Chilean Isolate of the Porcine Reproductive and Respiratory Syndrome Virus. Arch med vet 2007, 39, 115-127.