A pop-up mass vaccination clinic in Colorado was shut down after 11 people suffered adverse reactions to Johnson & Johnson shots administered there. More than 600 people's appointments at a 'Vaccines for All' event at Dick's Sporting Goods Park in Commerce City were cancelled on Wednesday when the clinic was forced to close at around 3.30pm.
Centura Health, which sponsored the event, said 11 people had adverse reactions such as nausea and dizziness in the on-site observation area minutes after receiving their Johnson & Johnson shot.