The U.S. Centers for Disease Control and Prevention (CDC) said on Aug. 4 that it expects another outbreak this year of a rare, polio-like condition that mostly affects children.
The CDC has said it does not know what causes acute flaccid myelitis (AFM), which affects the nervous system and triggers weakness and even paralysis in one or more limbs. Cases of the condition have spiked every 2 years in the United States since 2014, affecting more Americans with each outbreak.
