A former pharmacist in Grafton could face up to 20 years in federal prison after pleading guilty to charges he spoiled 57 vials of COVID-19 vaccine on purpose. Forty-six-year-old Steven Brandenburg made a virtual court appearance Tuesday during a video conference with U-S District Judge Brett Ludwig in Milwaukee. Brandenburg pleaded guilty to two counts of attempting to tamper with consumer products. He had been arrested on New Year’s Eve as part of an investigation into how the vials of Moderna vaccine had been left sitting outside of a refrigerator for hours. Brandenburg told investigators he believed the Moderna vaccine wasn’t safe and could alter a person’s D-N-A.