. Author manuscript; available in PMC: 2017 Jun 1.

Published in final edited form as: Int J Drug Policy. 2016 Feb 27;32:50–56. doi: 10.1016/j.drugpo.2016.02.021

Table 4.

Historical Comparison of HIV infection among PWID in New York City, US, and Haiphong, Vietnam

Year	New York City HIV Prevalence	Haiphong HIV Prevalence
1992	60%
1998	25%
2006	13%^*	66%
2009	10%^*	48%
2014	6%^**	25%^***

Estimated HIV incidence among all PWID = 1/100 PY

^**

Estimated HIV incidence among all PWID = 0.1/100 PY

^***

Estimated HIV incidence (new injectors) = 1/100 PY, incidence among MSM and female new injectors likely to be much higher. Estimated incidence among long-term injectors not available