Whooping cough: What's behind Canada's surge in cases?

Thousands of cases of whooping cough have been reported across Canada this year, with more than 12,000 reported nationwide — far surpassing the approximately 3,000 annually seen between 2015 and 2019. Doctors note there has been a decline in vaccine uptake, but said there may be more than just not enough people taking the vaccine that is behind the surge, including waning immunity. There's also questions about whether changes to the vaccine formula in the late 1990s, which led to far fewer adverse events, may also have led to a vaccine requiring more boosters to strengthen immunity. As Sean Previl reports, with infants at the most risk of severe whooping cough, there are steps that can be taken to protect Canada's most vulnerable. For more info, please go to https://globalnews.ca/news/10730538/whooping-cough-surge-canada-causes-vaccine-rates/ Subscribe to Global News Channel HERE: http://bit.ly/20fcXDc Like Global News on Facebook HERE: http://bit.ly/255GMJQ Follow Global News on X HERE: http://bit.ly/1Toz8mt Follow Global News on Instagram HERE: https://bit.ly/2QZaZIB #GlobalNews