The new case brings the territory's official count to 15.
Yukon has its 15th case of Covid-19, the first of any cases acquired locally.
Chief Medical Officer of Health Dr. Brendan Hanley says the person did travel to Dawson City, and that this case could be connected to the two people who tested positive for the virus shortly after returning home from a visit to the territory.
"Although this case is locally acquired, this does not mean that we have any community transmission. What we likely have is what we'd call a second-generation case of COVID, related to an original exposure outside of Yukon. This is still considered to be travel-related even though it's not the person who actually travelled."
Hanley says contract tracing has begun and is advising residents of Dawson City to monitor for symptoms.
Anyone who may have been in Superstore in Whitehorse between 8 and 9 am on August 1st, or at the Sunday service at Sacred Heart on August 2 should also monitor for symptoms.
Hanley says that this new case was to be expected and that it is another hurdle to overcome in the fight against Covid-19.
"I said that we had expected to see cases as we lifted our restrictions and this is what has happened, we can manage this if we continue to work together as a team."
Hanley says the person is recovering at home.