About 100,000 people attended the festival in Grant Park on each of the four days from Thursday to Sunday, organizers said Monday.
For those who are not vaccinated against COVID-19, a mask was required while inside the festival at all times.
“The real problem is not so much that a bunch of young people who come into Chicago getting COVID at this event.
“It’s a recipe for disaster,” Dr.
At a news conference last week, Dr.
“If everyone attending Lollapalooza is vaccinated or has a negative test, that’ll keep the numbers lower,” Dr.