MILWAUKEE (AP) — A former pharmacist in Wisconsin who intentionally ruined more than 500 doses of COVID-19 vaccine has been sentenced to three years in prison.

Steven Brandenburg, of Grafton, was sentenced Tuesday after pleading guilty in February to two felony counts of attempting to tamper with a consumer product. He had admitted to removing the doses manufactured by Moderna from a refrigerator for hours at Aurora Medical Center in Grafton, located just north of Milwaukee. Brandenburg said in a statement before receiving his sentence that he felt “great shame” and accepted responsibility for his actions. The Milwaukee Journal Sentinel reports he apologized to his co-workers, family and the community.

Prosecutors asked for a sentence of three years and five months. Brandenburg faced a maximum penalty of 10 years of imprisonment and $250,000 in fines for each felony count.

Brandenburg is an admitted conspiracy theorist who believes vaccines are a product of the devil. Brandenburg also secretly substituted saline for flu vaccine that he was mandated to receive and persuaded several co-workers to secretly swap saline for their flu vaccine as well, according to court filings.

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