(CNN) – “There is no evidence at this time of a super-spreading event” at Lollapalooza, Chicago’s famous music festival, Department of Public Health Commissioner Dr. Allison Arwady said at a news conference Thursday.
In total, 203 cases of Covid-19 have been reported, including 58 Chicago residents, 138 Illinois residents and seven out-of-state residents. No hospitalizations or deaths have been reported, according to Arwady.
“The bottom line is that we haven’t seen anything that surprised us in relation to this Lollapalooza outbreak,” he said.
Attendees of the Lollapalooza music festival were required to provide proof of vaccination against COVID-19 prior to admission on July 29, 2021. (Credit: Scott Olson / Getty Images)
About 90% of the people who attended Lollapalooza are vaccinated, but the Health Department used 88% vaccinated as a conservative estimate for its calculations, he said.
The Health Department estimates that approximately 385,000 people attended the festival.
“So, in total, we estimate that among those vaccinated at Lollapalooza, 0.004% were diagnosed with covid. That’s four out of every 10,000 vaccinated attendees, or 127 attendees, ”Arwady said.
“Among unvaccinated attendees, as expected, we saw a higher rate of covid-19 cases, but it was still low. Among unvaccinated Lollapalooza attendees, we estimate 0.0016% or 16 out of 10,000 attendees; 76 unvaccinated attendees reported testing positive, and as of yesterday we had no reported hospitalizations or deaths. We continue to follow up. “
Lollapalooza Music Festival. (Scott Olson / Getty Images)
Anyone who tested positive on or after Lollapalooza within 14 days of the festival is included in the data, so the broadcast may or may not be from the actual festival, Arwady noted.
Of the people who tested positive, 71% were not Chicago residents, 79% were under 30, 62% were white, and 82% had symptoms. 17% of positive attendees specified other high-risk potential exposure locations, such as visiting bars and traveling from out of state, Arwady said.