How to prevent ASFv getting onto pig farms?

African Swine Fever (ASF) is slowly creeping towards western Europe, affecting mostly wild boar populations. It looks like the virus will not go away anytime soon. Which are the practical measure systems to minimise the risk of ASF entering a swine farm? Physical isolation of the herd Where possible, depending on the pig production system, isolation of a farm can be obtained by maintaining adequate distances between farms, by full fencing the herd and installing a closed entrance to the farm ar