Norma Harris, Ph.D.; Amy Lansky, Ph.D., M.P.H.; Catlainn Sionean, Ph.D.; Wade Ivy, Ph.D.
Male-to-male sex and illicit injection drug use are important transmission routes for human immunodeficiency virus (HIV) infection. Of all new HIV infections in 2010, 80% were among men, of which 78% were among men who have sex with men (MSM), 6% amo...