according to WTWW.However, by Friday, the Chicago Department of Public Health announced new mask recommendations in response to the Centers for Disease Control and Prevention raising the city’s transmission rate status to “substantial.”“Based on the latest advice from the Chicago Department of Public Health, Lollapalooza will require masks in any indoor spaces at Grant Park beginning Saturday,” the festival tweeted on Friday. “We encourage all fans attending the festival to bring a mask as they attend the final two days of the festival.”Based on the latest advice from the Chicago Department of Public Health, Lollapalooza will require masks in any indoor spaces at Grant Park beginning Saturday.
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