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The DeKalb County Health Department on Tuesday reported 21 new cases, the biggest one-day rise in more than a week.

Oak Crest DeKalb Area Retirement Center remained at four cases on the county site, though in a letter to Oak Crest residents Sunday, Administrator Stephen Cichy said there were seven positive cases reported. DeKalb County Rehabilitation and Nursing Center in DeKalb remained at five cases and Willow Crest Nursing Pavilion in Sandwich added a case Monday among the staff and is now at 60.

Total deaths remain at 36 and total positive cases are at 1,396.

Of the new cases, five were in residents younger than 20, four were in their 20s, two in their 30s, three in their 40s, four in their 50s, one in their 60s, one in their 70s and one in their 80s.

In total, there have been reported 204 cases among residents younger than 20, 428 in their 20s, 201 in their 30s, 167 in their 40s, 160 in their 50s, 90 in their 60s, 67 in their 70s and 79 in their 80s or older.

According to county data, the city of DeKalb reports between 721 to 725 cases. There are 186 to 190 cases in Sycamore; 151 to 155 in Sandwich; 111 to 115 cases in Genoa; 66 to 70 cases in Cortland; 26 to 30 in Kingston and Hinckley; 21 to 25 cases in Kirkland and Malta; 16 to 20 in Somonauk; 11 to 15 in Waterman; and six to 10 in Shabbona. Esmond, Earlville and Maple Park each report one to five cases.

Cases listed on the county site are for those only occurring within the county; for instance the Earlville numbers only count Earlville residents who reside in DeKalb County.

The Illinois Department of Public Health lists cases and tests performed by ZIP code, while the county health department lists cases by municipality. Numbers vary between state and health departments because of data lags.

The 60115 ZIP code, including DeKalb, had 684 cases reported and 11,510 tests administered (a positivity rate of 5.9%); the 60178 ZIP code, including Sycamore, had 189 cases and 4,765 tests (3.96%); the 60548 ZIP code, including Sandwich, had 3,629 tests and 220 cases (6.1%); the 60112 ZIP code, including Cortland, had 65 cases and 1,065 tests (6.1%); the 60135 ZIP code, including Genoa, had 107 cases and 1,653 tests (6.5%); the 60145 ZIP code, including Kingston, had 25 cases and 425 tests (5.9%); the 60146 ZIP code, including Kirkland, had 30 cases and 580 tests (5.2%); the 60520 ZIP code, including Hinckley, had 28 cases and 621 tests (4.5%); the 60550 ZIP code, including Shabbona, had seven cases and 545 tests (1.3%); the 60151 ZIP code, including parts of Maple Park in both DeKalb and Kane counties, had 35 cases and 832 tests (4.2%); and the 60556 ZIP code, including Waterman, had 10 cases and 332 tests (3.0%).

In total, IDPH reported 264.210 people in Illinois have tested positive for COVID-19, while 8,332 people have died statewide. The number of tests performed rose to 4,810,827. The site also lists statewide recovery rates, calculated by recovered cases divided by the sum of recovered cases and dead cases. The statewide recovery remained at 96%.

According to testing and recovery data released by the county on Fridays, 28,286 tests have been run. There were 37 recoveries last week, bringing the total to 960. The county's positivity rate was 8.4%, up from 4.9, and with 122 new positive cases per 100,000 people, the county was placed into a warning by IDPH.

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