The primary objective of the study is to demonstrate that a short intramuscular (IM) pre-exposure prophylaxis (PrEP) regimen is non-inferior to the reference IM PrEP regimen in terms of seroconversion rate. The secondary objectives of the study are: * To describe the immunogenicity of the PrEP regimen in each group * To describe the antibody persistence in each group 6 months and 1 year after the last PrEP vaccination * To describe the immunogenicity of the simulated post-exposure prophylaxis (PEP) regimen in each group * To describe the safety profile of study vaccines administered as PrEP regimen and as a simulated PEP regimen in each group
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Seroconversion of participant
Timeframe: 14 days after the last PrEP vaccination