Nearly 600 veterans who received dental care at the Department of Veterans Affairs medical center in Tomah, Wis., may have been exposed to HIV and hepatitis B and C, CNN reported Dec. 2. The veterans now are awaiting tests to see if they are carrying the diseases. The exposure occurred when a dentist used his own equipment rather than that of the VA facility. The doctor’s equipment was not sterilized. The dentist, who was not identified, was scheduled to appear before a board. He has been moved to an administrative position and is not allowed to see patients, pending the outcome of an investigation into the incident. VA officials said that the veterans all were being screened for free, and the actual risk of infection is small.