They found a few more infested trees in the area.
The Canadian Food Inspection Agency was leading a delimitation survey around the infested tree, but we had already established a network of citizen scientists in the area and we had already done training on emerald ash borer identification prior to the initial detection. Therefore, when it was detected, it was easy for us to get our volunteers out on the ground.
We had assigned different streets in different areas of the city for people to cover. They did find more infested trees close to the initial infestation, but we quickly reported that information to the CFIA to include in their data.