Sonia Singh, Ph.D.; Amy Lansky, Ph.D., M.P.H.; Jacek Skarbinski, M.D.; Centers for Disease Control and Prevention
Gay, bisexual, and other men who have sex with men (MSM) represent approximately 2% of the United States population, yet are the risk group most affected by human immunodeficiency virus (HIV).1 In 2010, among persons newly infected with HIV, 63% were...