European PRRSpective 2023 session 2 Controlling farm breakdowns
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Long-lasting immunity achieved by means of vaccination is the main tool to prevent porcine parvovirus 1 (PPV1) infection and its associated clinical signs. Here it is reported the evaluation of the duration of immunity (DOI) conferred by a novel subunit vaccine based on the viral protein 2 of PPV1, named ReproCyc® ParvoFLEX.
After outbreaks of porcine reproductive and respiratory syndrome virus (PRRSV) infections in sow herds, the time to stability of the sow herd can take 18 to 55 weeks.1,2 Different sampling strategies (e.g., processing fluids, serum, or oral fluids) have been described to assess the PRRSV-status after implementing control measures like sow vaccination, improvement of hygiene protocols, lowering stocking density, and piglet flow optimization.1,3 Thus, we aimed to compare the different described strategies regarding their applicability for monitoring the PRRSV-status in a 3000-sow herd after a PRRS outbreak.
Porcine Reproductive and Respiratory Syndrome (PRRS) Virus is one of the major pathogens in pigs that have a significant economic impact on the swine industry worldwide. Modified life vaccine (MLV) against PRRSV has been demonstrated as an effective tool to control clinical signs related to infection. In literature, it is described that maternally derived antibodies (MDA) might interfere with MLV vaccination efficacy.
Porcine reproductive and respiratory syndrome virus (is responsible for losses in breeding as well as in growing pig herds and still has an important economic impact on pig production worldwide The objectives of the present study were 1 to establish an infection model with the virulent PRRSV 1 isolate AUT 15 33 in weaned piglets to reproduce symptoms comparable to those observed in the field 2 to assess the efficacy of the MLV vaccine “Ingelvac PRRSFLEX® EU” regarding viral shedding via oral fluids in vaccinated piglets after experimental PRRSV infection with PRRSV strain AUT 15 33 in comparison to non vaccinated piglets and 3 to determine if the dose of infection has an influence on the efficacy of the vaccine.