{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Flu+shot+text+messages",
    "query": {
      "intervention": "Flu shot text messages"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 34,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Flu+shot+text+messages&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-18T05:34:06.797Z",
  "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": "NCT07121192",
      "title": "A Study to Assess the Immune Response and Safety of a Vaccine Against Influenza in Adults 18 Years of Age and Older",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza, Human"
      ],
      "interventions": [
        {
          "name": "Flu mRNA (Formulation A)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Flu mRNA (Formulation B)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Comparator 1",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Comparator 2",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Comparator 3",
          "type": "COMBINATION_PRODUCT"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "COMBINATION_PRODUCT"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 776,
      "start_date": "2025-08-25",
      "completion_date": "2026-05-11",
      "has_results": false,
      "last_update_posted_date": "2026-05-28",
      "last_synced_at": "2026-09-18T05:34:06.797Z",
      "location_count": 22,
      "location_summary": "Anniston, Alabama • Fair Oaks, California • San Diego, California + 18 more",
      "locations": [
        {
          "city": "Anniston",
          "state": "Alabama"
        },
        {
          "city": "Fair Oaks",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Walnut Creek",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07121192"
    },
    {
      "nct_id": "NCT05508698",
      "title": "Flu Shot Pre-visit Questionnaire",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Precommitment Nudge",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Salience",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Geisinger Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 230962,
      "start_date": "2022-08-18",
      "completion_date": "2023-04-08",
      "has_results": false,
      "last_update_posted_date": "2023-07-25",
      "last_synced_at": "2026-09-18T05:34:06.797Z",
      "location_count": 1,
      "location_summary": "Danville, Pennsylvania",
      "locations": [
        {
          "city": "Danville",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05508698"
    },
    {
      "nct_id": "NCT01467934",
      "title": "FeverText: Assessing Fever Rates After Vaccination During the 2011-12 Influenza Season Using Text Messaging",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fever"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "23 Months",
        "sex": "ALL",
        "summary": "6 Months to 23 Months"
      },
      "enrollment_count": 530,
      "start_date": "2011-11",
      "completion_date": "2012-06",
      "has_results": true,
      "last_update_posted_date": "2014-07-21",
      "last_synced_at": "2026-09-18T05:34:06.797Z",
      "location_count": 2,
      "location_summary": "Atlanta, Georgia • New York, New York",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01467934"
    },
    {
      "nct_id": "NCT03516682",
      "title": "Reducing Delay in Vaccination of Children: Logistic Barriers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Communicable Disease"
      ],
      "interventions": [
        {
          "name": "Reminders",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Kaiser Permanente",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": "11 Months",
        "sex": "ALL",
        "summary": "1 Month to 11 Months"
      },
      "enrollment_count": 250,
      "start_date": "2018-06-01",
      "completion_date": "2019-03-31",
      "has_results": false,
      "last_update_posted_date": "2019-08-07",
      "last_synced_at": "2026-09-18T05:34:06.797Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03516682"
    },
    {
      "nct_id": "NCT05492786",
      "title": "High-risk Influenza Vaccine Alert",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Alert",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Salient alert features",
          "type": "BEHAVIORAL"
        },
        {
          "name": "High-risk Text",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Risk factors",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Geisinger Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 80452,
      "start_date": "2022-09-01",
      "completion_date": "2023-04-01",
      "has_results": true,
      "last_update_posted_date": "2024-12-30",
      "last_synced_at": "2026-09-18T05:34:06.797Z",
      "location_count": 1,
      "location_summary": "Danville, Pennsylvania",
      "locations": [
        {
          "city": "Danville",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05492786"
    },
    {
      "nct_id": "NCT02908893",
      "title": "Promoting Flu Vaccination Through a Mobile Wellness Program",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Not Condition-specific"
      ],
      "interventions": [
        {
          "name": "In-app and push notification mobile messages",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Evidation Health",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 77983,
      "start_date": "2016-09",
      "completion_date": "2017-06",
      "has_results": false,
      "last_update_posted_date": "2016-10-21",
      "last_synced_at": "2026-09-18T05:34:06.797Z",
      "location_count": 1,
      "location_summary": "Santa Barbara, California",
      "locations": [
        {
          "city": "Santa Barbara",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02908893"
    },
    {
      "nct_id": "NCT07372950",
      "title": "Kaiser Colorado Flu Nudge",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza",
        "Vaccination"
      ],
      "interventions": [
        {
          "name": "Behavioral economics framed test messaging",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Kaiser Permanente",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "6 Months and older"
      },
      "enrollment_count": 100000,
      "start_date": "2025-10-06",
      "completion_date": "2026-09-01",
      "has_results": false,
      "last_update_posted_date": "2026-01-28",
      "last_synced_at": "2026-09-18T05:34:06.797Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07372950"
    },
    {
      "nct_id": "NCT06274359",
      "title": "Digital Storytelling to Reduce Pediatric Influenza Vaccination Disparities",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Digital storytelling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Denver Health and Hospital Authority",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 398,
      "start_date": "2024-08-02",
      "completion_date": "2025-03-31",
      "has_results": true,
      "last_update_posted_date": "2026-08-28",
      "last_synced_at": "2026-09-18T05:34:06.797Z",
      "location_count": 2,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06274359"
    },
    {
      "nct_id": "NCT01248520",
      "title": "Influenza and Text Messaging in Pregnancy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "influenza and general health information",
          "type": "OTHER"
        },
        {
          "name": "general health information",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "14 Years to 50 Years · Female only"
      },
      "enrollment_count": 216,
      "start_date": "2010-09",
      "completion_date": "2014-04",
      "has_results": false,
      "last_update_posted_date": "2018-12-13",
      "last_synced_at": "2026-09-18T05:34:06.797Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01248520"
    },
    {
      "nct_id": "NCT03032159",
      "title": "Text2Breathe: Enhance Parent Communication to Reduce Pediatric Asthma Disparities",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "Text2Breathe Study Group",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Seattle Children's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 221,
      "start_date": "2015-08",
      "completion_date": "2020-03",
      "has_results": true,
      "last_update_posted_date": "2024-12-03",
      "last_synced_at": "2026-09-18T05:34:06.797Z",
      "location_count": 2,
      "location_summary": "Seattle, Washington • Tacoma, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        },
        {
          "city": "Tacoma",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03032159"
    }
  ]
}