The Centers for Disease Control and Prevention (CDC) is investigating an outbreak of illnesses that have been linked to ground bison meat. The outbreak has infected 21 people across seven states so far, reports ABC News.

Twenty-one people in Connecticut, Florida, Michigan, Missouri, New Jersey, New York and Pennsylvania have been infected with the E. coli O103 and O121 strains. Eight people have been hospitalized. Ill people in this outbreak report eating ground bison in burgers at restaurants and at home.

The source of the illnesses has been traced to Northfork Bison Distributors Inc., located in Saint-Leonard, Quebec, Canada. On July 16, 2019, Northfork recalled ground bison produced between February 22, 2019, and April 30, 2019. Recalled ground bison was sold to distributors as ground bison and bison patties, referred to as Bison Burgers and/or Buffalo Burgers. Recalled ground bison was also sold to retailers in 4-ounce burger patties.

Source: ABC News, CDC