“…Both methamphetamine use and abuse and HIV have had a disproportionate impact on the MSM community, particularly in large urban areas with sizable gay populations, leading some researchers to label them a "dual epidemic" among gay men (Halkitis, Parsons, & Stirratt, 2001). This synergistic relationship between methamphetamine use and HIV is supported by research showing the correlation between the use of this substance, high-risk sexual behavior, and HIV transmission among MSM (Brewer, Golden, & Handsfield, 2006;Frosch, Shoptaw, Huber, Rawson, & Ling, 1996;Halkitis et al, 2001;Halkitis, Green, & Carragher, 2006;Halkitis, Shrem, & Martin, 2005;Molitor, Truax, Ruiz, & Sun, 1998;Nemoto, Operario, & Soma, 2002;Rawson, Washton, Domier, & Reiber, 2002;Semple, Patterson, & Grant, 2002).…”