ERVW-1 and infection: To determine if tonsil vaccination with MVA encoding SIV-env and gag induced SIVgp120 V1V2 specific non-nAb responses, we examined SIVmac251-WY30 gp70 and SIVmac239-CS.23 gp70 V1V2 specific antibody levels in vaccinated animals prior to infection and at 2 weeks PI and compared them to control animals.