There have been some vaccines developed already, some even reached phase 1 to 3 human testing, and one even reached actual use. http://www.niaid.nih.gov/topics

There have been some vaccines developed already, some even reached phase 1 to 3 human testing, and one even reached actual use. http://www.niaid.nih.gov/topics/hivaids/research/vaccines/Pages/history.aspx http://www.niaid.nih.gov/topics/hivaids/research/vaccines/Pa...