{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?nctId=NCT04529538",
    "query": {
      "nctId": "NCT04529538"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 1,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T08:10:21.408Z",
  "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": "NCT04529538",
      "title": "Study of Novel Types 1 and 3 Oral Poliomyelitis Vaccines",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Poliomyelitis"
      ],
      "interventions": [
        {
          "name": "Novel Oral Polio Vaccine Type 1 (nOPV1)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Novel Oral Polio Vaccine Type 3 (nOPV3)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Sabin Monovalent Oral Polio Vaccine Type 1 (mOPV1)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Sabin Monovalent Oral Polio Vaccine Type 3 (mOPV3)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "PATH",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 226,
      "start_date": "2021-03-26",
      "completion_date": "2023-02-17",
      "has_results": true,
      "last_update_posted_date": "2024-11-20",
      "last_synced_at": "2026-09-05T08:10:21.408Z",
      "location_count": 4,
      "location_summary": "Baltimore, Maryland • Lebanon, New Hampshire • Chapel Hill, North Carolina + 1 more",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04529538"
    }
  ]
}