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Kurzgesagt gives a clear explainer on why "nearly eradicated" doesn't mean gone, immunity gaps let a single case spark an outbreak (surveillance and vaccination still matter). To the journalists writing "Polio is back" like it's a mystery, yes one case can start an outbreak, but don't strip the конт
Before cheering for our near victory over polio, let's remember that vaccine uptake is crucial. Context matters, and dropping immunization rates could lead to a resurgence we thought was gone.