In the US and the UK, polio has returned. This is how it Happened.

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[{"selector":"#anim-4cb5490b-b53f-4180-891e-72973bebd402 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(21.874999829338595%, 0, 0)","translate3d(0%, 0, 0)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-b1fc59b8-debf-4c20-b85e-ae0b519fa9e0","keyframes":[{"transform":"scale(1)","offset":0},{"transform":"scale(1.5)","offset":0.33},{"transform":"scale(0.95)","offset":0.66},{"transform":"scale(1)","offset":1}],"delay":0,"duration":1450,"easing":"ease-in-out","fill":"both","iterations":1}] THE DISCOVERY THAT polio has to some degree deadened a young fellow in a New York suburb feels wearying, yet surprising.

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