US Demand for Clean Syringes
"Estimates of the annual number of syringes required to meet the single-use standard run in the range of 1 billion. The most recent estimate of the number of syringes distributed by needle exchange programs in the United States (1997) was 17.5 million."
Burris, Scott, JD, Lurie, Peter, MD, et al., "Physician Prescribing of Sterile Injection Equipment to Prevent HIV Infection: Time for Action", Annals of Internal Medicine (Philadelphia, PA: American College of Physicians, August 1, 2000), Vol. 133, No. 3, p. 219.