A Safety and Immune Response Study of 2 Experimental HIV Vaccines

The HIV Vaccine Trials Network (HVTN) is doing a study to test a new HIV vaccine combination. HIV is the virus that causes AIDS. 252 people are taking part in this study at multiple sites. The US National Institutes of Health (NIH) is paying for the study. The investigators are doing this study to answer several questions. * Are the study vaccines safe to give to people? * Are people able to take the study vaccines without becoming too uncomfortable? * How do people\'s immune systems respond to the study vaccines? (Your immune system protects you from disease.)