In today's health matters, a Wisconsin clinic contacts more than 2000 patients over concerns they might have been exposed to blood-borne illness such as Hepatitis B and C and HIV.

Officials at Dean Clinic in Madison say an internal review revealed a former employee used demonstration insulin pens and finger stick devices on patients over the last five years.

The needles associated with the devices were changed by the former diabetes nurse educator between patients. Reusing them creates a slight risk of blood transfer from patient to patient.

The clinic has notified state and local health officials of the investigation. They are contacting each patient and have a team ready to answer questions.