The Tomah VA says it’s in the process of notifying 592 veterans that they may be infected with Hepatitis B, Hepatitis C, or HIV after they received care from one particular dental provider.

Acting Medical Center Director Victoria Brahm said the dentist was using his own equipment, then cleaning it and reusing it, which violates the VA’s regulations.

The Tomah VA says it uses sterile and disposable equipment.

The VA says he did this for one year, from October 2015 through October 2016.