PhD Defence: Epidemiology of PRRSV on Pig Farms in Costa Rica

Summary of dissertation

Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) is one of the most important diseases affecting pig production worldwide. In Costa Rica, the virus has been present for many years, but little was known about how it spreads, which virus variants circulate, and the economic damage it causes.

This thesis provides the first comprehensive study of PRRSV in Costa Rica by combining molecular biology, epidemiology, biosecurity, and economic analysis. The research showed that PRRSV is widely distributed in commercial pig farms and that several virus variants have been introduced into the country over time. Farm management and biosecurity practices were identified as important factors influencing the risk of infection.

The study also demonstrated that PRRSV can cause substantial economic losses by reducing productivity and increasing production costs. These findings highlight the need for stronger biosecurity measures, improved surveillance, and evidence-based control strategies.

Overall, this research provides valuable information to help veterinarians, farmers, and policymakers reduce the impact of PRRSV and improve the sustainability of pig production in Costa Rica.

The ceremony will begin with a short layman’s talk. The livestream will therefore start fifteen minutes earlier.