Yes, absolutely, we have data.
Look at how Italy does it. Italy had huge avian flu problems in early 1999-2000, so now it requires four or five risk factors to be considered when anyone wants to build a new facility or start up a new farm somewhere. One of those factors is distance from existing sites. If someone wants to start up a new farm in Italy, in general, it has to be at least two kilometres from other farms. However, for large breeding herds, the distance can be even greater. It depends on the type of livestock you want to raise, but there are data about that in the scientific literature.