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A worker walks alongside the Newtown Creek Wastewater Treatment Plant's array of digester eggs in the Greenpoint neighborhood of Brooklyn, New York

Why has polio emerged in the US, UK and Israel? A polio eradication expert weighs in.

Health & Medicine

New cases of polio have emerged in the US and Israel, and the disease has been detected in wastewater in the UK. Oliver Rosenbauer, the spokesperson for polio eradication at the World Health Organization, explains how some of them could be linked to the oral vaccine that’s long been used to prevent the disease.