A Study of Adenovirus Serotype 26.Respiratory Syncytial Virus.Pre-Fusion F (Ad26.RSV.preF)-Based Vaccine for Prevention of Respiratory Syncytial Virus (RSV) Mediated- Lower Respiratory Tract Disease (LRTD) in Japanese Participants

Inclusion Criteria: For Participants in Cohort 1 only * Must be greater than or equal to (\>=60) years old on the day of signing the informed consent form (ICF) and expected to be available for the duration of the study * Before randomization, a participant must be postmenopausal (postmenopausal state is defined as no menses for 12 months without an alternative medical cause); and not intending to conceive by any methods * Participants may have underlying illnesses such as hypertension, congestive heart failure (CHF), Chronic obstructive pulmonary disease (COPD), type 2 diabetes, hyperlipoproteinemia, or hypothyroidism, as long as their symptoms and signs are stable and medically controlled in the judgement of the investigator at the time of vaccination, and these conditions receive routine follow-up by the participant's healthcare provider For Participants in Cohort 2 only * Must be aged 20 to 59 years (inclusive) on the day of signing the ICF and expected to be available for the duration of the study * Has an existing chronic heart or lung condition, without hospitalizations or major medication class change (that is, new or stopped medications) within 30 days prior to screening * Participant may have other underlying illnesses as long as their symptoms and signs are stable at the time of vaccination, and these conditions receive routine follow-up by the participant's healthcare provider Exclusion Criteria: * Has a serious clinically unstable condition like, (example, …