Dentist Spread HIV with Needles

File this one in gross–and terrifying. A recently suspended Colorado dentist recycled needles and syringes, potentially spreading the HIV virus and other ailments to thousands of patients. Stephen Stein had not one, but two Denver-area clinics, which he owned from September 1999 to June 2011. Authorities have sent a letter to his former patients advising they get tested for HIV, hepatitis B, and hepatitis C. Any patient who received an injection from the dentist or his staff could be at risk, authorities say.