Safety and Efficacy of SA4Ag Vaccine in Adults Having Elective Open Posterior Spinal Fusion Procedures With Multilevel Instrumentation

• Biological: Staphylococcus aureus 4-Antigen (SA4Ag) Vaccine
  
  SA4Ag vaccine reconstituted in 0.5mL water for injection. Administered via IM injection, once 10 to 60 days prior to surgery
  Other Name: Vaccine
• Other: Placebo
  
  Vaccine excipients reconstituted in 0.5mL water for injections. Administered via IM injection given 10 to 60 days prior to surgery

• Active Comparator: SA4Ag
  
  Staphylococcus aureus 4-antigen Vaccine
  Intervention: Biological: Staphylococcus aureus 4-Antigen (SA4Ag) Vaccine
• Placebo Comparator: Placebo
  
  Diluent (sterile water) for Placebo
  Intervention: Other: Placebo

Inclusion Criteria:

• Subject must be scheduled to undergo an elective open posterior spinal fusion procedures with multilevel instrumentation, 10 to 60 days after study vaccination.
• Subject must be available for the entire duration of the study, and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures including completion of the electronic diary for 10 days after study vaccination.
• Aged 18 to <86 years old

Exclusion Criteria:

• Planned spinal fusion procedure requiring separate operations performed on separate days (ie, staged procedure).
• Surgical indication of malignancy, infection or acute or emergency trauma.
• History of major surgery within 3 months prior to enrollment, or anticipated major surgery other than the Index Surgical Procedure between study enrollment and completion of study participation.
• History of any spinal surgery performed within 6 months prior to study enrollment.
• History of any previous spinal surgery resulting in postoperative BSI or SSI.
• Congenital or acquired immunodeficiency disorder, rheumatologic disorder or other illness requiring chronic treatment with known immunosuppressant medications, including monoclonal antibodies within a year of enrollment or the use of systemic corticosteroids for > 14 days within 30 days prior to enrollment.
• History of leukemia, lymphoma, underlying bone marrow disorder or history of bone marrow transplant.