{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=SA4Ag+vaccine",
    "query": {
      "intervention": "SA4Ag vaccine"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-13T15:04:34.216Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT01364571",
      "title": "Evaluation of a Single Vaccination With One of Three Ascending Dose Levels of a 4-Antigen Staphylococcus Aureus Vaccine (SA4Ag) in Healthy Adults Aged 18 to <65 Years",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Staphylococcal Infections"
      ],
      "interventions": [
        {
          "name": "SA4Ag vaccine low dose",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Blood draw",
          "type": "PROCEDURE"
        },
        {
          "name": "Colonization swab sample",
          "type": "PROCEDURE"
        },
        {
          "name": "SA4Ag vaccine mid dose",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Blood sample",
          "type": "PROCEDURE"
        },
        {
          "name": "SA4Ag vaccine high dose",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "PROCEDURE"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 456,
      "start_date": "2011-08",
      "completion_date": "2013-01",
      "has_results": false,
      "last_update_posted_date": "2019-03-04",
      "last_synced_at": "2026-09-13T15:04:34.216Z",
      "location_count": 16,
      "location_summary": "Hollywood, Florida • South Miami, Florida • Overland Park, Kansas + 10 more",
      "locations": [
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "South Miami",
          "state": "Florida"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Bardstown",
          "state": "Kentucky"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01364571"
    },
    {
      "nct_id": "NCT01643941",
      "title": "Evaluation of a Single Vaccination of One of Three Ascending Dose Levels of a 4-Antigen Staphylococcus Aureus Vaccine (SA4Ag) and a Single Dose Level of a 3-Antigen Staphylococcus Aureus Vaccine (SA3Ag) in Healthy Adults Aged 65 to <86 Years",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Staphylococcal Infections"
      ],
      "interventions": [
        {
          "name": "SA4Ag vaccine low dose",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Blood draw",
          "type": "PROCEDURE"
        },
        {
          "name": "Colonization swab sample",
          "type": "PROCEDURE"
        },
        {
          "name": "SA4Ag vaccine mid dose",
          "type": "BIOLOGICAL"
        },
        {
          "name": "SA4Ag vaccine high dose",
          "type": "BIOLOGICAL"
        },
        {
          "name": "SA3Ag vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Blood sample",
          "type": "PROCEDURE"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Colonization swab samples",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "PROCEDURE"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "65 Years to 85 Years"
      },
      "enrollment_count": 284,
      "start_date": "2012-08",
      "completion_date": "2014-03",
      "has_results": false,
      "last_update_posted_date": "2019-03-04",
      "last_synced_at": "2026-09-13T15:04:34.216Z",
      "location_count": 7,
      "location_summary": "Hollywood, Florida • South Miami, Florida • Overland Park, Kansas + 4 more",
      "locations": [
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "South Miami",
          "state": "Florida"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Cary",
          "state": "North Carolina"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01643941"
    },
    {
      "nct_id": "NCT02364596",
      "title": "Evaluation of a Single Vaccination With a 4-Antigen Staphylococcus Aureus Vaccine (SA4Ag) in Healthy Adults Aged 18 to <65 Years",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Staphylococcal Infections"
      ],
      "interventions": [
        {
          "name": "SA4Ag vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Blood sample",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "PROCEDURE"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 100,
      "start_date": "2015-01",
      "completion_date": "2015-02",
      "has_results": false,
      "last_update_posted_date": "2015-04-03",
      "last_synced_at": "2026-09-13T15:04:34.216Z",
      "location_count": 2,
      "location_summary": "Hollywood, Florida • South Miami, Florida",
      "locations": [
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "South Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02364596"
    },
    {
      "nct_id": "NCT02388165",
      "title": "Safety and Efficacy of SA4Ag Vaccine in Adults Having Elective Open Posterior Spinal Fusion Procedures With Multilevel Instrumentation",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Staphylococcal Vaccine"
      ],
      "interventions": [
        {
          "name": "Staphylococcus aureus 4-Antigen (SA4Ag) Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 3450,
      "start_date": "2015-07-02",
      "completion_date": "2019-06-27",
      "has_results": true,
      "last_update_posted_date": "2021-01-05",
      "last_synced_at": "2026-09-13T15:04:34.216Z",
      "location_count": 234,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 89 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02388165"
    }
  ]
}