What was the initial name given to the virus that causes PRRS?

The virus responsible for Porcine Reproductive and Respiratory Syndrome (PRRS) was initially named the Lelystad Virus. This name originated from the location where the virus was first identified, which was Lelystad in the Netherlands, in the late 1980s. The significant impact of this disease on the swine industry highlighted the importance of understanding its origin and the specifics of its virus, leading to further research and awareness around PRRS. The other names listed are associated with different viruses entirely, contributing to various diseases in swine but not related to the PRRS virus itself.