COVID-19 update: Variants infecting Illinoisans in their 20s most, data shows

  • So far, 3,498,473 people have been fully vaccinated or 27.5% of Illinois' 12.7 million population.

    So far, 3,498,473 people have been fully vaccinated or 27.5% of Illinois' 12.7 million population. Courtesy of the Village of Addison

Updated 4/21/2021 7:35 PM

Young people in their 20s are the most likely age group to contract any of four highly contagious mutations of COVID-19 circulating in Illinois, data showed Wednesday.

Individuals ages 20 to 29 constituted 21.7% of 1,603 total COVID-19 variant infections, and Illinoisans in their 30s followed at 15.4%, the Illinois Department of Public Health reported.


The 40-49 age group and 50-59 age group each represented about 14.3% of variant cases.

Children and teens ages 10 through 19 were 13.7% of those infected by variants, people in their 60s represented 9.4%, children up to age 9 were 6.3%, and seniors 70 and older were 4.9%.

"Current data suggests that COVID-19 vaccines authorized for use in the U.S. offer protection against the variants circulating," Centers for Disease Control Director Rochelle Walensky said at a briefing this week.

The most predominant COVID-19 variant in Illinois originated in the United Kingdom and has caused 72% of the variant cases, followed by a Brazilian strain linked to 21%.

New cases of COVID-19 totaled 2,765 Wednesday, marking a four-day streak of daily infections falling below 3,000, according to IDPH records.

Twenty-eight more people died of the respiratory disease, including one man in his 30s, one man in his 40s, and three women and one man in their 50s.

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On Tuesday, 140,712 more COVID-19 shots were administered. The seven-day average is 122,842.

The federal government has delivered 10,358,875 doses of vaccine to Illinois since distribution began in mid-December, and 8,342,542 shots have been administered.

So far, 3,498,473 people -- 27.5% of Illinois' population -- have been fully vaccinated. Vaccines manufactured by Pfizer and Moderna require two doses several weeks apart.

Illinois hospitals were treating 2,191 COVID-19 patients Tuesday night, higher than the seven-day average of 2,155.

The state's seven-day case positivity rate is 3.8%.

Total cases statewide stand at 1,309,552, and 21,722 Illinoisans have died since the pandemic began.

Labs processed 81,133 virus tests in the last 24 hours.

Other COVID-19 variants in Illinois originate from California, representing 6% of cases, and from South America making up over 1% of cases.

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