Chicago Passes 400 COVID-19 Cases Per Day; Officials Have Warned That Threshold Could Mean Return Of Some RestrictionsThe latest surge in cases is largely driven by the more contagious delta variant, which is spreading mostly among those who haven't been fully vaccinated.
'It's Appropriate': Chicago Festivals Put In COVID Precautions, Some Businesses Asking For Proof Of Vaccine"We already stayed home. We're now back out in public. People that are not vaccinated should make the choice right now to stay home because this variant is dangerous."
Illinois Reports Highest COVID Infection Rate Since January, Most New Cases Per Day In 3 MonthsIllinois is averaging 2,392 new cases per day over the past week, the highest daily case rate since May 7.
Lightfoot, Arwady: Masks Are Needed Indoors For Now Amid Rising COVID-19 Delta Variant Cases, But Vaccines Work, And It's Time To Get Vaccinated NowMayor Lori Lightfoot and Chicago Department of Health Director Dr. Allison Arwady said Sunday that it is important now for everyone to wear a mask – vaccinated or not – amid rising COVID-19 rates driven by the especially contagious Delta variant, but also emphasized that it is unvaccinated people, not vaccinated people, who are most at risk.
As Lollapalooza Ends, Concerns About The Spread Of The COVID-19 Delta Variant BeginSunday is the last day for Lollapalooza, but it's only the beginning of Chicago's concern over the contagious Delta variant. 
'It's Incredibly Contagious': The COVID Delta Variant Is Strong, Local Doctors Say A Vaccine Is The Best Defense“Instead of seeing 1% of people die and 15% of people hospitalized. We see like 15% of people getting sick and only 1% of them end up in the hospital."
DuPage, Will Counties Flagged As COVID-19 Hot Zones As Cases Rise Once MoreTwo counties in the greater Chicago area have been highlighted as hot zones for the coronavirus as cases rise again.
Gamma Variant Cases Still Exceed Delta In Illinois, But Delta Surging As COVID-19 Cases Climb AgainAs of Wednesday, cases of the Delta variant have nearly tripled over the last two weeks in Illinois, whereas Gamma has risen just a little over 1% over that same period.
Mayor Lori Lightfoot Warns COVID-19 Restrictions Could Return If Spread Of Delta Variant Causes Another Surge“In the last couple of weeks, we have seen a steady rise in our daily case and test positivity rates; an increase that we believe is caused by the highly contagious delta variant of COVID-19,” Lightfoot said.
Stock Market Plummets Amidst Growing Fears Of COVID's Delta VariantDoes the huge drop in the Dow Jones and other indices mark the end of a historic run that dates back to the pandemic's early days?
As Delta Variant Of COVID Continues To Spread, Cook County Doubling Down On Efforts To Reach The UnvaccinatedCounty Board President Toni Preckwinkle pointed out vaccines are readily available at pharmacies, doctors' offices, and other convenient locations around Cook County.