Myth: An HIV vaccine already exists.
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Fact: This is also false. There is no licensed vaccine against HIV or AIDS, but scientists are getting closer than ever before to developing an effective vaccine against HIV. In 2009, a large-scale vaccine study conducted in Thailand (called RV144) showed that a vaccine combination could prevent about 32 percent of new infections. The HVTN is leading the effort to build on these results, and planning for several studies is underway.