Unpredictable whooping cough outbreaks see cases rise in Ontario, drop in Quebec
Whooping cough is on track to reach a record number of cases in Ontario while infections climb in eastern provinces and decline in Quebec, but experts say trying to predict the course of the highly contagious disease has been especially difficult this year.
Whooping cough is on track to reach a record number of cases in Ontario while infections climb in eastern provinces and decline in Quebec, but experts say trying to predict the course of the highly contagious disease has been especially difficult this year.
