According to the Centers for Disease Control and Prevention, the city of Evanston has been increasing its level of community risk of Covid-19 from medium to "high" this Thursday in the last seven days for which they are on alert. 397 new Covid cases were reported in Evanston in the last seven days compared to last week. As soon as Evanston exceeds 200 Covid cases per 100,000 people in a week, this will become a high level in the community, according to officials. Chicago said the levels may be low in some counties depending on the ratio of new local hospital admissions to occupied beds. Meanwhile, due to the percentage of occupied beds in Evanston hospitals, today it is at a medium risk level, however the Cook Public Health Department cases are increasing, putting this also at a medium risk level. Evanston residents over the age of 5 are 90% already vaccinated, local health officials say. Cook, Kane, McHenry, Lake, DuPage, DeKalb and Will counties are included in the middle tier, based on this CDC health data. Chicago is currently at the “medium” level of Covid risk. Regardless of residents' vaccination status, mask use continues in indoor public spaces, including schools due to "high" community risk of Covid.