Needle sharing is the practice of intravenous drug - users by which a syringe is shared by multiple individuals to administer intravenous drugs .
Is a primary vector for diseases which can be transmitted through blood ( blood - borne pathogens ) .
Needle sharing is the practice of intravenous drug - users by which a syringe is shared by multiple individuals to administer intravenous drugs , and is a primary vector for diseases which can be transmitted through blood ( blood - borne pathogens ) .