Coronavirus in Illinois updates: Chicago expands vaccine eligibility to anyone 16 and older, high school students return to classrooms

Outside Chicago, as of Sunday, the state was reporting 21 school outbreaks of five or more cases, including six involving at least 11 cases. A dozen outbreaks were sourced to sports, eight to classrooms and one to non-sports activities. In CPS, the number of weekly cases has risen sharply in the two weeks since spring break, surpassing 80 for the first time since numbers peaked in November. Unlike the fall, however, more than one-third of recent cases have been students, and last week saw the highest number of student cases yet.