<unk>  is the practice of intravenous drug-users by which a needle or syringe is shared by multiple individuals to administer intravenous drugs such as heroin, steroids, and hormones. This is a primary vector for blood-borne diseases which can be transmitted through blood (blood-borne pathogens). People who inject drugs (PWID) are at an increased risk for Hepatitis C (HCV) and HIV due to<unk>  practices. From 1933 to 1943, malaria was spread between users in the New York City area by this method. Afterwards, the use of quinine as a cutting agent in drug mixes became more common. Harm reduction efforts including safe disposal of needles, supervised injection sites, and public education may help bring awareness on safer<unk>  practices.
Needle sharing
Needlestick injury
Self-medication
Stab wound
Hand washing
Animal bite
Electrical burn
Indoor tanning