CDC: Less than half of COVID-19 cases BA.5 Nov 8, 2022 | COVID-19 Update, Top Stories Less than half of COVID-19 cases in a six-state region that includes Illinois were BA.5 last week, as other variants make inroads.To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.