I'd like to add some data on that. I happen to have in front of me a communication from the CMPA. This is a year old now, but in the past five years, there were only 150 cases in all of Canada that the CMPA received in which antibiotic use was ever discussed, and essentially none of them were related to underuse. If anything, they were related to antibiotic-related harm.
On November 2nd, 2017. See this statement in context.