Unanswered Questions
More than 3 million children and young adults had tested positive for COVID in the United States as of Feb. 18, the American Academy of Pediatrics and the Children's Hospital Association report. Most of these kids experience mild, if any, symptoms.
Over the course of the pandemic, though, it has become apparent that some children develop serious and potentially long-term problems.
The most well-known of these complications is called "multisystem inflammatory syndrome in children," or MIS-C. Symptoms — which include high fever, a skin rash and stomach pain — can appear up to a month after getting COVID. Around 2,000 cases have been identified in the United States. Black and Hispanic children make up a disproportionate share: 69%.