At least here in BC the definition of community outbreak is a cluster of cases where multiple people continue to be considered infected. Any time there is an "exposure event" such as on flights or at the strip club or July 1st parties with known infected individuals attending, they are subsequently referred to as outbreaks when more people get sick from said exposure. Never have they referred to a flight outbreak, whereas the Kelowna July 1st parties are now referred to as a community outbreak with subsequent new infections mentioned as related to that particular event. Once 14 days have passed in which no further cases are traced to that original outbreak, it is considered over. So, extrapolation, yes, but logical based on how things are reported here.