Most of the industries are addressing that. Doing that is in one's own interest in order to remain viable as an industry. My personal experience is mainly with swine and poultry in the Fraser Valley. For anyone going onto a poultry farm in the Fraser Valley, there's an anteroom. Before you go into the barn there's a line at which you have to change your footwear and your outer clothing. As a veterinarian, you can't be in another barn that day, and you have to have changed everything in between farms.
How you perform biosecurity to protect a farm is well known. The measures are fairly intense for even just a broiler barn, and they go up, based on the value of the bird inside, to the point that they're not going to let a visitor in unless the actual barn is empty. They're just not going to let that happen. They go all the way up to the very high biosecurity swine barns, for which you have to shower in and shower out. Literally, there's that point going in and out at which you have just come through a shower and you are naked and you're putting on a whole different set of clothes, on the other side of the barn, that stay in the barn. That's a very high level of biosecurity.
These things are very variable. For instance, if you go to a dairy farm, people don't seem to really pay a lot of attention other than not letting onto the premises or into the barn, hopefully, people who have been in another barn, and trying to be aware of that. Different industries have different relationships with biosecurity, and I guess the ones I'm more familiar with—and certainly the ones that come under more scrutiny by the animal activists—are mink farms and poultry farms. On swine farms and even on mink farms there is a very high level of biosecurity.