VAERS stands for “Vaccine Adverse Event Reporting System.” It’s used as a “national early warning system to detect possible safety problems in U.S.-licensed vaccines,” it’s been around for much longer than the COVID-19 vaccines or even COVID-19, and it’s how regulators are examining the data about possible complications related to the Johnson & Johnson COVID-19 vaccine. And as the cherry on top, the data is open to the public through the WONDER search engine. So what’s there?