A Study to Evaluate Safety, Tolerability, and Immunogenicity of V350A and V350B in Healthy Participants (V350-001).

Inclusion Criteria: The key inclusion criteria include but are not limited to the following: * Is in good health before randomization. * Has a body mass index between 18 and 38 kg/m\^2, inclusive, for adults 18-30; has a body mass index between 15 and 38 kg/m\^2, inclusive, for adolescents 12-17. Exclusion Criteria: The key exclusion criteria include but are not limited to the following: * Has a confirmed or suspected case of infectious mononucleosis within 12 months prior to enrollment. * Has any immunosuppressive medical condition or receive any immunosuppressive therapy.