A Study on Safety and Immune Response of Investigational RSV OA Vaccine in Combination With Herpes Zoster Vaccine in Healthy Adults

Inclusion Criteria: * A male or female participant ≥50 YOA at the time of the first study intervention administration. * Female participants of non-childbearing potential may be enrolled in the study. * Female participants of childbearing potential may be enrolled in the study, if the participant: * has practiced adequate contraception from 1 month prior to study intervention administration. * has a negative pregnancy test on the day of and prior to study intervention administration. * has agreed to continue effective contraception until the end of the study. * Participants who, in the opinion of the investigator, can and will comply with the requirements of the protocol. Written or witnessed informed consent obtained from the participant prior to any study specific procedure being performed. * Participants living in the general community or in an assisted-living facility that provides minimal assistance, such that the participant is primarily responsible for self-care and activities of daily living. * Participants who are medically stable in the opinion of the investigator at the time of first study intervention administration. Participants with chronic stable medical conditions with or without specific treatment, such as diabetes mellitus, hypertension, or cardiac disease, are allowed to participate in this study if considered by the investigator as medically stable. Exclusion Criteria: * Pregnant or lactating female. * Female planning to become pregnant or planni…