I appreciate the honesty in reporting a KHV outbreak although it is a legal requirement to do so. I accept there will be some unscrupulous places that try to hide it. I for one will not be fishing any commercials that have had a KHV outbreak and expect me to use my nets. Just because the fish have stopped dying doesn't mean the virus has gone. I always dry my nets but it only takes one angler to not do it for the virus to be spread. I agree it will cost a fishery money but whats better losing a percentage of their custom or providing nets.
The advice from CEFAS below is spot on as far as I am concerned.
The Environment Agency strongly advises that angling should stop on any water where fish are dying or showing disease symptoms - this helps reduce stress on the fish and may aid their recovery.
Once fish have stopped dying and the remaining fish are showing signs of recovery, such as feeding, then there is no reason why angling should not start again. However, fisheries that have had a disease outbreak should make landing or keep nets available for anglers to use on affected sites. This will reduce the risk of spread of the disease, protecting other local fisheries, and reduce concerns of other fishery owners.