In this subtitle the following words have the meanings indicated. “Commissioner of Health” means the Baltimore City Commissioner of Health. “HIV” means the human immunodeficiency virus that causes acquired immune deficiency syndrome (AIDS). “Participant” means an individual who has registered with the Program. “Program” means the HIV Prevention Syringe Services Program. “Residue” means the dried remains of a controlled dangerous substance attached to or contained within a hypodermic needle or syringe.