Overview
The purpose of this study is to evaluate the safety and immunogenicity of different formulations of vaccines encoding the RSV monovalent antigen or the Flu hemagglutinin subtype 5 (H5) antigen in healthy participants aged 18 to 49 years.
The total duration of study participation for each participant varies by stage and treatment arm.
Stage 1:
- For Arm 1, Arm 2, and Arm 3 the duration of study participation will be approximately 7 months for each participant.
- For Arm 4, Arm 5, and Arm 6 the duration of study participation will be approximately 6 months for each participant.
Stage 2: For all arms, the duration of study participation will be approximately 7 months for each participant.
Eligibility
Inclusion Criteria:
- Aged 18 to 49 years on the day of inclusion
- A female participant is eligible to participate if she is not pregnant or breastfeeding and of the following conditions applies:
- Is of NCBP (Non-Child-Bearing Potential). To be considered of NCBP, a female must be post-menopausal for at least 1 year, or surgically sterile. OR
- Is of CBP (Child-Bearing Potential) and uses an effective contraceptive method or abstinence from at least 4 weeks prior to study intervention administration until at least 12 weeks after the last study intervention administration.
Exclusion Criteria:
• Any condition which, in the opinion of the Investigator, might interfere with the evaluation of the study objectives
The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.


