Quebec has seen the biggest spike in cases, with more than 11,600 reported so far this year, up from the annual average of 562 cases between 2015 and 2019.
Whooping cough cases are surging in Canada. What’s going on? |Sean Previl
Quebec has seen the biggest spike in cases, with more than 11,600 reported so far this year, up from the annual average of 562 cases between 2015 and 2019.
