The CDC and Utah Department of Health have 16 confirmed cases of patients with Hepatitis C. The outbreak is related to a former nurse, Elet Nielson.
Nielson was caught stealing drugs from Davis and McKay-Dee Hospitals.
There are 7,217 patients who have not been tested for Hepatitis C, but could have been exposed.
With 16 confirmed cases, there is still concern that nearly half of the 7,217 people who may have been exposed have not come in for free testing.
Nielson was fired for stealing Benadryl in 2013 at Davis Hospital. She was then hired by McKay-Dee and began stealing narcotics.
Officials are unsure how the virus was spread. Nielson may have contracted the virus from a patient then infected others. Or she could have been the original carrier.
The genotype of the Hepatitis C 2B is very rare. It only accounts for 10 percent of all cases of hepatitis C in Utah. This makes it easier to evaluate the connection and how the virus spread.
Hepatitis C is treatable if caught early. But If left untreated it can cause death.
The most common way to contract Hep C in the U.S is through needle sharing. Because the nurse was stealing IV narcotics from the facility, it's possible that she shared needles with her patients. This is being considered as a possible cause of the outbreak.