this post was submitted on 13 Jul 2024
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For years, medical experts have warned a rising number of Canadians are being exposed to ticks carrying an array of dangerous pathogens. Lyme disease is the most familiar โ€” and by far the most common โ€” but there's growing concern about lesser-known threats as well, from various bacterial infections, to the rare Powassan virus that claimed Harris's life earlier this year.

Case counts are rising, yet data remains thin, all while climate change is helping tick populations spread further north, putting even more of the population at risk. The question now, experts say, is whether awareness and surveillance efforts are keeping up with a growing threat.

"There's probably still more of [these infections] than what's being diagnosed โ€ฆ because the general public is probably not that aware of it, and healthcare providers aren't aware of it," said Dr. Isaac Bogoch, an infectious diseases specialist with the University Health Network in Toronto.

"The more you look, the more you find."

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[โ€“] [email protected] 6 points 1 month ago

Making a vaccine for lyme disease available will help immenselyโ€”I believe there's one in clinical trials south of the border.

[โ€“] [email protected] 1 points 1 month ago

This is the best summary I could come up with:


Lyme disease is the most familiar โ€” and by far the most common โ€” but there's growing concern about lesser-known threats as well, from various bacterial infections, to the rare Powassan virus that claimed Harris's life earlier this year.

"We are seeing a lot more victims, especially in those high-tick areas, specifically if you're looking at Ontario, Quebec, and Nova Scotia," said Heather Coatsworth, one of the Public Health Agency of Canada's (PHAC) top tick experts, in an interview with CBC News.

As for Powassan โ€” named after the Ontario town where it was first discovered in a young boy who died of his illness back in 1958 โ€” infections remain rare and localized to certain regions, Coatsworth noted.

New U.S. surveillance data, published in the journal Clinical Microbiology and Infection in June, also shows a four-fold spike in the number of American cases, partially thanks to the broader spread of the black-legged ticks that carry both Powassan and Lyme.

"Climate change is the main driver," Coatsworth said, noting that the increased range of ticks means these various health threats are now appearing in more animal species and urban, downtown areas.

Ottawa-area resident Mary Raths considers herself lucky for getting a prompt anaplasmosis diagnosis and treatment when she fell ill with a headache, nausea, and fever, not long after a camping trip in 2021.


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