A Study of an Adenovirus Serotype 26 Pre-fusion Conformation-stabilized F Protein (Ad26. RSV. preF) Based Respiratory Syncytial Virus (RSV) Vaccine in the Prevention of Lower Respiratory Tract Disease in Adults Aged 60 Years and Older
A Study of an Adenovirus Serotype 26 Pre-fusion Conformation-stabilized F Protein (Ad26. RSV. preF) Based Respiratory Syncytial Virus (RSV) Vaccine in the Prevention of Lower Respiratory Tract Disease in Adults Aged 60 Years and Older
The study will enroll up to 27,200 participants in order to demonstrate the efficacy of the active Ad26.RSV.preF-based study vaccine in the prevention of Reverse Transcription Polymerase Chain Reaction (RT-PCR) confirmed Respiratory Syncytial Virus (RSV)-mediated Lower Respiratory Tract Disease (LRTD) when compared to placebo in adults aged 60 years and above.
Primary outcome measures
Number of Participants With First Occurrence of Reverse Transcriptase Polymerase Chain Reaction (RT-PCR)-Confirmed Respiratory Syncytial Virus (RSV) Mediated Lower Respiratory Tract Disease (LRTD)
Secondary outcome measures
Number of Participants With First Occurrence of Any RT-PCR-Confirmed RSV-mediated Acute Respiratory Infection (ARI)
Number of Participants With First Occurrence of RT-PCR-Confirmed RSV Mediated LRTD During the Second Year
Number of Participants With First Occurrence of Any RT-PCR-Confirmed RSV Mediated ARI During the Second Year
Number of Participants With First Occurrence of Predefined Clinically Relevant Disease Associated With RT-PCR-Confirmed RSV-Mediated ARI Over the Whole Study
Number of Participants With Serious Adverse Events (SAEs)
Number of Participants With Potential Adverse Events of Special Interest (AESIs)
Number of Participants With Solicited Local Adverse Events (AEs) up to 7 Days After Vaccination
Number of Participants With Solicited Systemic AEs up to 7 Days After Vaccination
Number of Participants With Unsolicited AEs up to 28 Days After Vaccination
Respiratory Syncytial Virus (RSV) A2 Strain Neutralization Antibody Titers at 14 Days Post Vaccination
Geometric Mean Titers (GMTs) of Prefusion F-protein (Pre-F) Antibodies Immunoglobulin G (IgG) as Assessed by Enzyme-linked Immunosorbent Assay (ELISA) at 14 Days Post Vaccination
T-cell Interferon (IFN) Gamma Responses to Respiratory Syncytial Virus (RSV) F Protein Peptides Analyzed by Enzyme-linked Immunospot Assay (ELISpot)
Area Under the Curve (AUC) of the Change From Baseline in Respiratory Infection Intensity and Impact Questionnaire (RiiQ) Total Symptom Scale Score