{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Vaccine+Refusal",
    "query": {
      "condition": "Vaccine Refusal"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 72,
    "total_pages": 8,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Vaccine+Refusal&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T09:44:00.775Z",
  "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": "NCT05998824",
      "title": "COVID-19 Vaccination Hesitancy in Adults With Sickle Cell Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sickle Cell Disease",
        "COVID-19 Vaccine",
        "Vaccine Hesitancy"
      ],
      "interventions": [
        {
          "name": "SCD-specific COVID-19 vaccination information (SCVI) video",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 33,
      "start_date": "2023-09-19",
      "completion_date": "2024-09-30",
      "has_results": false,
      "last_update_posted_date": "2024-12-24",
      "last_synced_at": "2026-05-22T09:44:00.775Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05998824"
    },
    {
      "nct_id": "NCT05022472",
      "title": "Project 2VIDA! COVID-19 Vaccine Intervention Delivery for Adults in Southern California",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Vaccine Refusal",
        "Covid19"
      ],
      "interventions": [
        {
          "name": "COVID-19 Individual Awareness and Education.",
          "type": "BEHAVIORAL"
        },
        {
          "name": "COVID-19 Community Outreach & Health Promotion.",
          "type": "BEHAVIORAL"
        },
        {
          "name": "COVID-19 Individual Health Education & Linkages to Medical and Supportive Services.",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Pop-up community vaccination sites",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "BIOLOGICAL"
      ],
      "sponsor": "Britt Skaathun",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "16 Years to 99 Years"
      },
      "enrollment_count": 1051,
      "start_date": "2021-07-16",
      "completion_date": "2024-03-29",
      "has_results": true,
      "last_update_posted_date": "2025-06-06",
      "last_synced_at": "2026-05-22T09:44:00.775Z",
      "location_count": 6,
      "location_summary": "Chula Vista, California • San Diego, California • San Ysidro, California",
      "locations": [
        {
          "city": "Chula Vista",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05022472"
    },
    {
      "nct_id": "NCT04380623",
      "title": "A Tailored, Health Communication Intervention for HPV Vaccine Hesitant Families",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Human Papilloma Virus",
        "HPV-Related Carcinoma",
        "Vaccine Refusal",
        "Parents",
        "Program, Communication"
      ],
      "interventions": [
        {
          "name": "Mobile Phone-Based Web-Page: HPV vaccine",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Meharry Medical College",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 244,
      "start_date": "2021-02-15",
      "completion_date": "2024-05-30",
      "has_results": false,
      "last_update_posted_date": "2021-09-08",
      "last_synced_at": "2026-05-22T09:44:00.775Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04380623"
    },
    {
      "nct_id": "NCT05926544",
      "title": "COVID-19 Vaccine Hesitancy Counseling Intervention for Pharmacists",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Standard implementation webinar and online training",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Virtual facilitation",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 16,
      "start_date": "2023-10-04",
      "completion_date": "2024-06-20",
      "has_results": true,
      "last_update_posted_date": "2026-01-14",
      "last_synced_at": "2026-05-22T09:44:00.775Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05926544"
    },
    {
      "nct_id": "NCT06036134",
      "title": "Reducing COVID-19 Vaccine Hesitancy Among Hispanic Parents",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccine-Preventable Diseases",
        "COVID-19 Pandemic",
        "Health-Related Behavior",
        "Health Knowledge, Attitudes, Practice",
        "Narration"
      ],
      "interventions": [
        {
          "name": "Baseline surveys",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Digital Storytelling Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Information Control Intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Arizona State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 80,
      "start_date": "2023-12-01",
      "completion_date": "2025-08-31",
      "has_results": false,
      "last_update_posted_date": "2026-01-26",
      "last_synced_at": "2026-05-22T09:44:00.775Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06036134"
    },
    {
      "nct_id": "NCT04999267",
      "title": "Increasing Vaccine Uptake Among Adolescents in the Rural South",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccine Hesitancy"
      ],
      "interventions": [
        {
          "name": "INVEST",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 2,
      "start_date": "2021-08-31",
      "completion_date": "2022-11-03",
      "has_results": true,
      "last_update_posted_date": "2025-12-10",
      "last_synced_at": "2026-05-22T09:44:00.775Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina • Columbia, South Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Columbia",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04999267"
    },
    {
      "nct_id": "NCT07172074",
      "title": "Comparing Relative Strengths of Statistical Associations Between Psychological Traits and Vaccination-Related Outcomes I",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccination",
        "Vaccination Hesitancy",
        "Vaccination Promotion",
        "Psychological Aspects"
      ],
      "interventions": [
        {
          "name": "General Psych Trait Measure",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Vaccine-Specific Psych Trait Measures",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "University of Iowa",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1786,
      "start_date": "2022-12-30",
      "completion_date": "2025-02-27",
      "has_results": false,
      "last_update_posted_date": "2025-09-16",
      "last_synced_at": "2026-05-22T09:44:00.775Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07172074"
    },
    {
      "nct_id": "NCT06505993",
      "title": "Addressing COVID-19 Vaccine Hesitancy With Muliti-Level Interventions in Appalachia",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "COVID-19",
        "Vaccine Hesitancy"
      ],
      "interventions": [
        {
          "name": "Health Communication",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Health Communication + Structural",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Marc Kiviniemi",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 2250,
      "start_date": "2026-09",
      "completion_date": "2027-09",
      "has_results": false,
      "last_update_posted_date": "2026-02-20",
      "last_synced_at": "2026-05-22T09:44:00.775Z",
      "location_count": 1,
      "location_summary": "Hazard, Kentucky",
      "locations": [
        {
          "city": "Hazard",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06505993"
    },
    {
      "nct_id": "NCT06074237",
      "title": "Improving Vaccine Counseling Skills Among Residents Using Educational Modules and Standardized Patient Encounters",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccine Refusal",
        "Vaccine-Preventable Diseases",
        "Physician-Patient Relations"
      ],
      "interventions": [
        {
          "name": "Immersive resident education",
          "type": "OTHER"
        },
        {
          "name": "Standardized patient (SP) encounter",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Corewell Health East",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 112,
      "start_date": "2024-04-25",
      "completion_date": "2025-06-27",
      "has_results": false,
      "last_update_posted_date": "2026-01-22",
      "last_synced_at": "2026-05-22T09:44:00.775Z",
      "location_count": 1,
      "location_summary": "Royal Oak, Michigan",
      "locations": [
        {
          "city": "Royal Oak",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06074237"
    },
    {
      "nct_id": "NCT04568590",
      "title": "Promoting Altruism to Enhance Vaccine Acceptance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vaccine Refusal"
      ],
      "interventions": [
        {
          "name": "educational intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 510,
      "start_date": "2020-10-19",
      "completion_date": "2021-10-26",
      "has_results": true,
      "last_update_posted_date": "2024-08-12",
      "last_synced_at": "2026-05-22T09:44:00.775Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04568590"
    }
  ]
}