Hundreds of patients are being asked to get tested for hepatitis B and C, as well as HIV, due to the potential exposure by an anesthesiologist.

Thousands of patients who were treated at two hospitals in Portland, Oregon, are being told to get bloods tests because of an “infection control breach” linked to an anesthesiologist that may have exposed them to HIV and hepatitis B and C.

About 2,400 people who were patients of two health care providers — Providence and Legacy Health — are potentially affected and have been advised to take tests “out of an abundance of caution.”

Providence Willamette Falls Medical Center in Oregon City said in a statement that about 2,200 of its patients, and two patients at Providence Portland Medical Center, have been informed.