Table 1 Sources for variables used in mathematical modeling

Proportion of IDUs HIV- (I)

Généreux et al. [19]; Broadhead, Kerr, Grund & Altice [20]

Rate of Needle sharing (s)

Bruneau et al. [9]; De et al. [8]; Généreux et al. [19]

Number of needles in circulation (N)

Morissette et al. [7]

Percentage of needles not cleaned (d)

Jacobs et al. [18]; Kaplan and O'Keefe [21]

Probability of HIV infections from a single injection (t)

Kaplan and O'Keefe [21]

Number of sharing partners (m)

Jacobs et al. [18]

Proportion of IDUs HIV+ (q)

Broadhead et al. [20]; Généreux et al. [19]

Proportion IDUs HCV- (I)

De et al. [8]; Broadhead et al. [20]; Généreux et al. [19]

Proportion of IDUs HCV+ (q)

De et al. [8]; Broadhead et al. [20]; Généreux et al. [19]

Probability of HCV infection from single injection (t)

Gore & Bird [22]