This trial will investigate whether immunizations with an MVA recombinant HIV vaccine are safe and whether they will boost immune responses generated by immunizations with a dendritic cell (DC) targeted protein vaccine, DCVax-001, plus poly ICLC in healthy HIV-uninfected volunteers. Investigators propose to assess the quality of immunity elicited by immunizations with MVA-CMDR only or by booster immunizations with MVA-CMDR in volunteers previously immunized with a DC-targeted HIV vaccine. This vaccination regimen can provide the proof-of-concept that DC targeted protein vaccines can prime strong immune responses and therefore be valuable in combination with other vaccine modalities against HIV or other diseases.