Diagnosis of Mixed Infection of Classical Swine Fever Virus (CSFV) and Porcine Reproductive and Respiratory Syndrome Virus(PRRSV)

The pathogenesis of three sick pigs from the pig farm was determined by epidemiological survey,autopsy pathological observation;bacteriological detection,fluorescence antibody test and RT-PCR.The results showed that three pigs may be infected by classical swine fever(CSF) and porcine reproductive and respiratory syndrome(PRRS),the bacterium isolated from three sick pigs was negative,the direct fluorescence antibody test of classical swine fever was positive,and the classical swine fever(CSF) and porcine reproductive and respiratory syndrome were positive by RT-PCR test,which indicates that three sick pigs were infected by virus of classical swine fever(CSF) and porcine reproductive and respiratory syndrome.