The bird illness was verified at a facility near Montgomery, Powys on April 23.
After the discovery, a 3km defense zone was taken into location around the property, together with a 10km security zone that extended into England.
On May 17, following the effective conclusion of illness control activities and security within the zone, the 3km defense zone in Wales concerned an end, while the security zones remained in location.
Today, June 7, the Department for Environment, Food and Rural Affairs ended the steps enforced in the 10km security zone.