Uploaded August 2026 | Updated September 2026, 2 weeks ago

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This year, emergency room visits for tick bites have increased dramatically, corresponding with a new threat: a rise in Alpha-gal syndrome (AGS), where one bite from a lone star tick can make you violently allergic to red meat. Correspondent David Pogue looks at how residents of Martha Vineyard are addressing an epidemic of Alpha-gal, and talks with experts about how best to avoid tick bites.

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