Polio has reemerged in the US. Who should get a polio vaccine now?


Understandably, these events have sparked a lot of questions: Why does one case of polio worry officials? What does it mean to find poliovirus in wastewater? Who should be worried about contracting the disease? If someone had the vaccine years ago, are they still protected now? To understand more about this disease, which most people alive today have never experienced, I spoke with CNN Medical An...

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