If “Safe sex” is the best way to protect AIDs, then same thing with the ASF, the disease can infect to pigs by “eating contaminated food, feces, secretion”, then the best way of protection is to “not” let pig get any risks of eating contaminated food or anything. Such that, “Biosecurity” is the most important issue that we need to “reinforce” and “seriously practice” in our farms to keep the ASF away from our industries.