Lollapalooza sparks COVID-19 worries as concertgoers flock to Chicago

The Lollapalooza outdoor music festival is underway in Chicago, causing some concerns as the delta variant causes COVID cases to surge across the country. But organizers of the four-day event say proof of vaccinations or negative test results have been required for entry.

More than 90% of concertgoers showed proof of vaccination on the first day of the festival, the organizers said, while 8% showed proof of a negative test result. They said 600 people were denied entry for showing up without the necessary paperwork, and if you're unvaccinated, you're required to wear a mask. Despite signs reminding those concertgoers to wear masks, few are have been seen wearing them, and it's unclear how they're being enforced. Brad Watson, a vaccinated concertgoer, said he was "a little uneasy" and "a little nervous because of all the breakthrough cases."