People wait in line at the United Center mass vaccination site in the Near West Side neighborhood on March 9, 2021. Credit: Colin Boyle/Block Club Chicago

CHICAGO — The United Center will switch to using the Johnson & Johnson vaccine for walk-in appointments come April 20.

The Johnson & Johnson vaccine requires only one shot, and there’s been high demand for that vaccine from residents, according to a Mayor’s Office news release. People can make appointments to get the shot at the site online or by calling 312-746-4835.

People must be at least 18 to get a shot at the United Center; otherwise, anyone of that age is eligible for a spot at the site. The vaccinations are free regardless of a person’s insurance.

RELATED: Here’s How To Get Vaccinated At The United Center

There will be high demand for the appointments and people should check back frequently, according to the Mayor’s Office.

The site’s drive-thru will continue to offer second-dose Pfizer shots to people who already got a first dose of that type at the United Center.

Block Club Chicago’s coronavirus coverage is free for all readers. Block Club is an independent, 501(c)(3), journalist-run newsroom.

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