This document summarizes information about Porcine Reproductive and Respiratory Syndrome Virus (PRRSV). PRRSV is an enveloped, positive-sense, single-stranded RNA virus that infects domestic pigs. It causes respiratory disease in piglets and reproductive failure in sows, resulting in increased pre-weaning mortality and fewer viable piglets born. The virus spreads between pigs through respiratory and bodily secretions. Diagnosis involves PCR or serological testing of samples like blood, tissues, and nasal swabs. Vaccination with live attenuated or inactivated vaccines can help prevent disease, as can testing, isolation, improved hygiene, and limiting introduction of new pigs.
34. •Airborne transmission
•Mechanical means via faeces, dust,
droplets and contaminated equipment,
etc.
•Contaminated boots and clothing.
•Vehicles.
•Artificial insemination
39. •Infected pigs are immune to reinfection
•Vaccination-live attenuated, inactivated
•limit the frequency of seed stock
introductions to the sow herd
•assure that the replacement gilts be
well-acclimatized to the PRRS virus
40. •Boars introduced into negative herds
should be quarantined for 60-90 days
after purchase and confirmed negative
serologically
41. •depopulate, clean and disinfect the
facilities and, after a few weeks,
repopulate with stock free of PRRS
42. •Control is by exclusion
•no specific treatment
•Broad-spectrum antibiotics.
•Anti-inflammatory products (e.g.
aspirin)
43. • Other helpful techniques
• Early weaning and isolation of piglets
•Regular serologic monitoring
• Testing (ELISA, PCR and IFA)
•Removal of persistent carriers in herds
•improving biosecurity.