• Expertise article

Post-weaning multisystemic wasting syndrome (PMWS) is a globally emergent epizootic disease of swine. As the name suggests, the disease is mainly described in pigs aged 6-12 weeks and is manifest clinically by mortality, ill-thrift (wasting), paleness, dyspnoea, intermittent diarrhoea and visibly enlarged lymph nodes. Since its first description in Western Canada in 1991 the disease has rapidly spread to all the major pig producing countries of the world including Europe, the Americas and Asia. Most recently, the disease been reported in several countries that were previously considered free from disease (New Zealand and Sweden). PMWS is one of the most common forms of porcine circovirus associated disease (PCVD) on a global scale. The role of porcine circovirus type 2 (PCV2) in PMWS is clear in terms of its association with the pathology, but less clear in terms of the mechanisms of disease induction and pathogenesis. There is evidence that PCV2 was circulating, at least in Europe, as far back as the 1960s in the absence of epizootic PMWS. PCV2 has been associated with a number of non-PMWS disease conditions, or PCVDs, including porcine respiratory disease complex, porcine dermatitis and nephropathy syndrome (PDNS), granulomatous enteritis, and occasional reproductive disorders.

• 90 min
• Asian PRRSpective | AS 2024

In this advanced session, speakers from Asian PRRSpective 2024 continue the discussion on effective swine disease control, with a focus on step 4 of the recovery process. Daniel Linhares, Clayton Johnson, Lance Mulberry, and Marius Kunze offer deep insights on recovery plans tailored to specific farm needs.

• 10 minutes
• Expertise article
• N Grützner, P Latell, D Höppe, G Gröbke, D Hoeltig, R Steens

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.

• 10 minutes
• Expertise article
• Dražen Hižman, Rebecca Morgenstern, Vladan Miljković

Infection with porcine reproductive and respiratory syndrome virus (PRRSV) may lead to significant losses in productivity of breeding and growing pig herds1,2. Performance data was monitored over two years in a commercial farm in Croatia, which faced an acute PRRS outbreak and subsequently implemented changes in the vaccination program. The present abstract presents the results of nursery mortality. Sow performance is presented in a second abstract.