My herd is PRRSV-free at the moment. What are my chances of becoming PRRSV-positive?
You can take steps to reduce the chances by implementing different biosecurity measures and procedures. You should only purchase replacements which are PRRSV-negative, because the most likely way to introduce infection is by buying in infected animals. If semen is purchased, this should be from a known PRRSV free source. Furthermore other means in which PRRSV is spread: infected needles, local airborne spread etc, should be taken into account.
