Why whooping cough cases are rising in Canada. – National

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Why whooping cough cases are rising in Canada. – National

Whooping cough cases are on the rise in Canada, with some provinces reporting sharp increases compared to pre-pandemic averages.

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More than 11,670 cases have been reported in Quebec so far this year, a significant jump from the annual average of 562 cases between 2015 and 2019.

The majority of whooping cough patients are between the ages of 10 and 14, a spokesperson for Quebec’s health ministry said in an email to The ********* Press.

The last peak of whooping cough activity in the province was in 2019, when 1,269 cases were reported, the email said.

As of June, Ontario has seen 470 whooping cough cases, compared to the five-year average of 98, a provincial dashboard shows.

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2:05
Ontario public health units report rise in whooping cough cases

Toronto has reported 99 cases so far this year, while Ottawa has seen 76 – more than double the pre-pandemic annual averages recorded in those cities.

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These figures come on the heels of a whooping cough outbreak declared last week in New Brunswick with 141 cases reported so far, exceeding the five-year average of 34 cases per year.

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The highly contagious, vaccine-preventable ******** also known as pertussis is on the rise across Canada and can be very serious in young children, Canada’s chief public health officer Dr. Theresa Tam said last week.

Whooping cough is a cyclical ******** that increases every two to five or six years, public health officials say.

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“It would appear that we’re currently in one of those cyclical increases,” said Dr. Allison Chris, an associate medical officer of health at Toronto Public Health.

The illness marked by a persistent cough begins with cold-like symptoms and evolves over several weeks to include coughing spells that often end with a “whoop” sound when an infected person is catching their breath.

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New Brunswick’s acting chief medical officer of health says the province hadn’t seen a whooping cough outbreak in more than 10 years.

“I guess you could say we were certainly overdue for an increase in cases,” Dr. Yves Léger said in an interview Tuesday.

Léger said he expects the current case count to get worse before tapering off, given an increase in public awareness surrounding the provincial outbreak and the reporting that will likely come with it.

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Vaccines that protect children against whooping cough are part of Canada’s routine immunization program, beginning at two months old. Primary immunization requires four doses, followed by booster shots later in childhood and adolescence.

A dose of acellular pertussis-containing vaccine is also recommended for adults and during pregnancy.

Chris said setbacks in routine vaccine coverage since the COVID-19 pandemic could point to waning pertussis immunity.

The COVID vaccine hesitancy observed during the pandemic could have also rubbed off on routine vaccine uptake, Dr. Anna Banerji, a pediatric infectious ********* specialist in Toronto, said in an interview.

Another challenge is that “even in fully vaccinated people, after a ******* of time, the immunity can wane,” Banerji said Tuesday.

A rise in whooping cough cases has also been reported in the ******* States and elsewhere, prompting the Pan ********* Health Organization to issue an alert in July encouraging countries to ramp up their surveillance and vaccination coverage.

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