Between July 10 and Aug. 28, new weekly COVID cases in school-aged children more than tripled in the metro-east, overlapping with the start of fully in-person school for most students, according to state health officials.

Early in the summer, COVID cases among all age groups had dropped as vaccination rates rose. By the end of June, though, youth cases in Region 4 in Illinois began to climb rapidly, according to data from the Illinois Department of Public Health. Region 4 includes St. Clair, Madison, Monroe, Randolph, Clinton, Bond and Washington counties.

As the highly contagious delta variant became more prevalent, though, cases began to rise again, especially among unvaccinated people. Only children ages 12 and older are eligible for the COVID vaccine. School staff members are required to get the first dose by Sept. 19 or get tested at least once a week.

SUMMER YOUTH COVID CASES IN SOUTHWEST ILLINOIS

Date	St. Clair County	Madison County	Monroe County	Bond County	Clinton County	Randolph County	Washington County
6/5/2021	16	4	0	No data	1	1	No data
6/12/2021	11	8	0	No data	No data	1	No data
6/19/2021	12	15	3	No data	No data	No data	No data
6/26/2021	32	38	1	No data	1	No data	No data
7/3/2021	45	36	3	1	No data	4	No data
7/10/2021	84	57	3	3	2	9	3
7/17/2021	97	68	2	3	2	6	2
7/24/2021	115	118	13	5	10	8	4
7/31/2021	135	119	10	2	23	14	4
8/7/2021	145	127	13	3	22	13	15
8/14/21	149	174	16	12	38	42	13
8/21/21	154	198	25	8	38	43	15
8/28/21	188	194	27	16	74	27	8
9/4/21	173	252	20	17	39	34	18

Table: Megan Valley / mvalley@bnd.com  Source: Illinois Department of Public HealthGet the data

Data is not available for all six counties for every week over the summer, especially in June, when overall numbers were low. After the summer lull, the first week where all six counties were reporting again ended July 10: Between the six counties, there were 161 new cases reported for youth ages 5 to 17.

By the last week of August, that had increased to 534 new cases per week. The state health department updates the data for youth cases by county on a lag, so that week is the most recent data available.

Most schools in southwest Illinois started their new school years in mid- to late- August. Cases in the metro-east and all of Illinois have continued to rise during that time, including among youth ages 5 to 17.https://datawrapper.dwcdn.net/7M5yk/2/

Unlike last year, Illinois schools were expected to start fully in-person this year; last year, many metro-east schools continued to operate on a hybrid model with both remote and in-person learning for much or all of the year.

Full in-person learning doesn’t allow for social distancing to the extent that hybrid learning does. Hybrid learning has, at most, half of the student capacity that full in-person learning does.

SUMMER YOUTH COVID CASES IN SOUTHWEST ILLINOIS

Date	St. Clair County	Madison County	Monroe County	Bond County	Clinton County	Randolph County	Washington County
6/5/2021	16	4	0	No data	1	1	No data
6/12/2021	11	8	0	No data	No data	1	No data
6/19/2021	12	15	3	No data	No data	No data	No data
6/26/2021	32	38	1	No data	1	No data	No data
7/3/2021	45	36	3	1	No data	4	No data
7/10/2021	84	57	3	3	2	9	3
7/17/2021	97	68	2	3	2	6	2
7/24/2021	115	118	13	5	10	8	4
7/31/2021	135	119	10	2	23	14	4
8/7/2021	145	127	13	3	22	13	15
8/14/21	149	174	16	12	38	42	13
8/21/21	154	198	25	8	38	43	15
8/28/21	188	194	27	16	74	27	8
9/4/21	173	252	20	17	39	34	18

Table: Megan Valley / mvalley@bnd.com  Source: Illinois Department of Public HealthGet the data