Officials in Tennessee’s most populous county are reporting more than 4,380 active cases of COVID-19, with a quarter of those being seen in children as schools prepare to resume classes next week. Shelby County has seen a significant increase in coronavirus cases in July and August. The county health department reported a seven-day rolling average of 447 newly-reported cases per day. Health officials say that among 4,383 active cases, 1,051 are among people under 18. Le Bonheur Children’s Hospital in Memphis reported two deaths among child patients this week. Shelby County Schools starts classes Monday.