Needle exchange programs would decrease the overall amount of viruses spread through misuse or reuse of already used needles. It would be a cheaper alternative to give sterile needles to users than have them in HIV/AIDS treatment. Needle exchanges would decrease the risk of health problems from use of unsanitary needles. It could also bring the user into a facility for reducing drug use and the use of harm prevention.
Yes, The median annual budget for running a program was $169,000 in 1992.
Mathematical models based on those data predict that needle exchanges
could prevent HIV infections among clients, their sex partners, and
offspring at a cost of about $9,400 per infection averted. This is far
below the $195,188 lifetime cost of treating an HIV-infected person at
present. A national program of NEPs would have saved up to 10,000 lives
Needle exchange programs greatly reduce the spread of HIV/AIDS and are stil very effective. There are many drug addicts who just can't control and stop what they are doing, and they should be allowed to get new needles, but they should pay for it. The program should in no way encourage drug addicts to continue in their addiction but should enforce drug addicts to quit over time.
While I do not agree with the program, I do think that it does help reduce the spread of HIV/AIDS. I think that some drug addicts find the program to be appealing because it helps them get new needles which are easier to use. But what positives it has is also negated by the problems it causes.
The people inclined to use a needle exchange program are probably those who would be cautious or decide to purchase a needle that was clean as they clearly have some sense of personal safety. At the margins, those too poor to buy needles and unable to stop drug use benefit the most, but the exchanges probably only have a marginal effect at safety.