HB 3174 authorizes county and hospital district disease control pilot programs in seven major counties (Bexar, Dallas, El Paso, Harris, Nueces, Travis, and Webb) to combat the spread of HIV, hepatitis B, and hepatitis C through initiatives such as needle exchange programs, disease education, and access to health services. The bill allows organizations to register with local governments to distribute hypodermic needles and syringes, charge registration and user fees, and solicit private donations. It also decriminalizes possession and distribution of syringes used in these programs until September 1, 2035​.