Page 45 of articles about biosecurity

The focus of swine production in the USA has changed over the last five years. Many businesses in the sector have made radical changes in management both from the reproductive and the sanitary point of view.

In this second part the direct routes (infected pigs and contaminated semen) and indirect routes (fomites and transportation vehicles) of PRRSV are tackled, as is the persistence of the virus because the persistence of the infection is a characteristic of PRRSV infections in pigs and plays a major role in the control and eradication of the disease.