
Jennifer Yoon
Senior Health Reporter
Jennifer Yoon covers the latest health news for CBC News on television, radio and digital. You can reach her at jennifer.yoon@cbc.ca.
Latest from Jennifer Yoon

Vaccination rates are slipping around the world. Canada isn't immune, says new study
The pandemic dealt a heavy blow to vaccination rates, with an estimated 15 million children missing routine shots between 2020 and 2023, said an author of the study published in The Lancet. The world never fully rebounded to pre-pandemic childhood vaccination levels.
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They're too young to drive or vote — but they're caring for their ailing loved ones
Findings from a recent case study suggest that as family doctors treat a growing aging population, they will also need to start providing support for the young people who are increasingly sharing the burden of caring for loved ones.
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Should childhood vaccinations be mandatory? Almost 70% of Canadians think so, according to a new poll
Measles cases are surging across Canada, so it might not come as a surprise that nearly 70 per cent of Canadians surveyed recently by the Angus Reid Institute agreed that childhood vaccinations should be mandatory.
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With measles outbreaks growing in Canada, this mother pleads with parents to vaccinate
With measles cases on the rise in Canada at rates unseen in almost three decades — and vaccination coverage for childhood vaccines like the measles, mumps and rubella (MMR) shot falling since the pandemic — those who've suffered from measles complications are pleading that those who can get vaccinated do.
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Second Opinion
Step up measles vaccinations, say doctors as outbreaks accelerate in Ontario, Alberta
Measles outbreaks in Ontario and Alberta continue to grow because vaccination rates are too low, say some doctors urging provincial public health officials to step up efforts.
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Do I need a third dose of the measles vaccine? And other common questions answered
With over 1,000 cases in Ontario alone, 2025 is already a record-shattering year for measles infections.
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RFK Jr. calls artificial food dyes 'poisonous.' Here's how they're regulated in Canada
The U.S. Food and Drug Administration plans to phase out eight food dyes. U.S. Health and Human Services Secretary Robert F. Kennedy Jr. called them "poisonous compounds." The evidence is a bit more nuanced though. Here is a fact check.
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Treat childhood obesity by reducing stigma, adding options, say new Canadian guidelines
GLP-1s like Ozempic, as well as weight-loss surgery, are among the recommendations to treat childhood obesity in the first guideline update in Canada in almost 20 years.
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Measles outbreaks spark concern over rare 'horrific' neurological disorder
As measles outbreaks in Canada grow and spread between provinces, pediatricians are again recommending vaccinations while also bracing for serious complications, including a rare, long-term neurological disorder that can emerge six to 10 years after an initial measles infection.
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SECOND OPINION
Top American scientists just lost their jobs. Canada is rolling out the welcome mat
What would it take to bring American scientists north? Increasing research funding — as well as costs for things that make research possible — would be a good start, say experts.
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