Breakdown of the paper: The grown-up sickness called COVID-19 can make people's brains change. But we don't know much about how it affects kids' brains. Kids' brains are still growing and changing a lot, so even a small sickness could have big effects on how they learn and feel. This study wants to see if COVID-19 changes kids' brains and if those changes stay for a long time. The study found that kids who had COVID-19 had some brain parts that were smaller. For example, a part of the brain called the cingulate cortex, which helps with thinking, and another part called the postcentral gyrus, which helps with touch, got smaller after COVID-19. Also, a part called the hippocampus, which helps with memory, and the superior temporal gyrus, which helps with language, were smaller in kids who had COVID-19 compared to healthy kids. The wrinkles and thickness of the superior temporal gyrus also got smaller after COVID-19, but these seemed to get a little better over time. When looking at how brain parts work together, the brains of kids who had COVID-19 were not as good at sending messages far away, but they were still good at sending messages to nearby parts. This means their brain connections were a bit different. ......