That is what we call the incubation period, and it seems to be a whole range, anywhere from one day to 14 days. In the majority of cases—and that number is recalibrated every single day—the general incubation period is estimated to be five to six days right now, but you will have some outliers that are particularly long. In Canada we've considered the longest incubation period, 14 days, with regard to how we pursue our public health actions.
On January 29th, 2020. See this statement in context.