Racing to understand the polio-like illness paralyzing kids

For the past few years, a rare polio-like illness has been striking otherwise healthy children, often after a mild respiratory illness or fever. Cases of acute flaccid myelitis, or AFM, reached record-high numbers in 2018, and doctors still cannot pinpoint what causes the disease, how to treat it or how to stop it. Amna Nawaz explores how families are recovering from its devastating consequences.