{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Upper+Respiratory+Tract+Infection&page=4",
    "query": {
      "condition": "Upper Respiratory Tract Infection",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 157,
    "total_pages": 16,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Upper+Respiratory+Tract+Infection&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Upper+Respiratory+Tract+Infection&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-05T01:54:35.882Z",
  "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": "NCT07431840",
      "title": "Immune Defense Protein Impact On Respiratory Immune Outcomes",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Upper Respiratory Disease",
        "Influenza",
        "Viral Upper Respiratory Infection"
      ],
      "interventions": [
        {
          "name": "Immune Defense Protein 50mg Dose",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "IDP 200mg Dose",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Matching Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Quantec Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2025-12-05",
      "completion_date": "2026-07-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-12",
      "last_synced_at": "2026-10-05T01:54:35.882Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07431840"
    },
    {
      "nct_id": "NCT01129128",
      "title": "Three Arm Trial of Immune Effects of Echinacea",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Upper Respiratory Tract Infections"
      ],
      "interventions": [
        {
          "name": "Echinacea purpurea product",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 67,
      "start_date": "2010-05",
      "completion_date": "2011-03",
      "has_results": true,
      "last_update_posted_date": "2012-06-21",
      "last_synced_at": "2026-10-05T01:54:35.882Z",
      "location_count": 1,
      "location_summary": "Kenmore, Washington",
      "locations": [
        {
          "city": "Kenmore",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01129128"
    },
    {
      "nct_id": "NCT00694421",
      "title": "Gas Supply, Demand and Middle Ear Gas Balance: Specific Aim 2",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Upper Respiratory Infection"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Cuneyt M. Alper",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "54 Years",
        "sex": "ALL",
        "summary": "2 Years to 54 Years"
      },
      "enrollment_count": 139,
      "start_date": "2008-01",
      "completion_date": "2012-05",
      "has_results": false,
      "last_update_posted_date": "2016-11-04",
      "last_synced_at": "2026-10-05T01:54:35.882Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00694421"
    },
    {
      "nct_id": "NCT04815018",
      "title": "Shifts in the Respiratory Microbiome and Clinical Outcomes of SARS-CoV-2",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "SARS-CoV-2 Infection",
        "Bacterial Respiratory Tract Infection",
        "Viral Respiratory Tract Infection"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Pathnostics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 185,
      "start_date": "2020-10-07",
      "completion_date": "2021-05-30",
      "has_results": false,
      "last_update_posted_date": "2021-06-30",
      "last_synced_at": "2026-10-05T01:54:35.882Z",
      "location_count": 4,
      "location_summary": "Delaware, Ohio • Granville, Ohio • Westerville, Ohio",
      "locations": [
        {
          "city": "Delaware",
          "state": "Ohio"
        },
        {
          "city": "Delaware",
          "state": "Ohio"
        },
        {
          "city": "Granville",
          "state": "Ohio"
        },
        {
          "city": "Westerville",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04815018"
    },
    {
      "nct_id": "NCT05127161",
      "title": "Broad Implementation of Outpatient Stewardship",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Acute Respiratory Tract Infection",
        "Otitis Media",
        "Pharyngitis",
        "Acute Sinusitis"
      ],
      "interventions": [
        {
          "name": "Broad Implementation of Outpatient Stewardship (BIOS) intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Children's Hospital of Philadelphia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "6 Months to 12 Years"
      },
      "enrollment_count": 1032,
      "start_date": "2022-10-31",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-09",
      "last_synced_at": "2026-10-05T01:54:35.882Z",
      "location_count": 5,
      "location_summary": "Plantation, Florida • Cleveland, Ohio • Hershey, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "Plantation",
          "state": "Florida"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Hershey",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05127161"
    },
    {
      "nct_id": "NCT03089970",
      "title": "Using Breath Metabolites to Determine Specific Virus Infection in Asthmatic Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Upper Respiratory Tract Infections, Asthma, Exhaled Breath"
      ],
      "interventions": [
        {
          "name": "Exhaled breath condensate collection",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 19,
      "start_date": "2017-02-01",
      "completion_date": "2020-09-01",
      "has_results": false,
      "last_update_posted_date": "2021-08-20",
      "last_synced_at": "2026-10-05T01:54:35.882Z",
      "location_count": 1,
      "location_summary": "Sacramento, California",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03089970"
    },
    {
      "nct_id": "NCT04248361",
      "title": "TEM-PCR™ Prospective Clinical Utility Study",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Upper Resp Tract Infection"
      ],
      "interventions": [
        {
          "name": "TEM-PCR URI Panel",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "SOC/Empiric Diagnosis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "Diatherix Laboratories, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 314,
      "start_date": "2020-03-06",
      "completion_date": "2022-05-31",
      "has_results": false,
      "last_update_posted_date": "2021-08-20",
      "last_synced_at": "2026-10-05T01:54:35.882Z",
      "location_count": 4,
      "location_summary": "Athens, Alabama • Huntsville, Alabama",
      "locations": [
        {
          "city": "Athens",
          "state": "Alabama"
        },
        {
          "city": "Athens",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04248361"
    },
    {
      "nct_id": "NCT02682355",
      "title": "Optimizing Clinical Use of Polymyxin B",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pneumonia",
        "Blood Stream Infection",
        "Urinary Tract Infections",
        "Respiratory Tract Infection (Including Tracheobronchitis)",
        "Sepsis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Rutgers, The State University of New Jersey",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 155,
      "start_date": "2016-02",
      "completion_date": "2022-08-03",
      "has_results": false,
      "last_update_posted_date": "2024-12-02",
      "last_synced_at": "2026-10-05T01:54:35.882Z",
      "location_count": 3,
      "location_summary": "Chicago, Illinois • New York, New York",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02682355"
    },
    {
      "nct_id": "NCT04826809",
      "title": "New Reusable Mask Design With Superior Filtration and Fit",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Covid19",
        "Tuberculosis",
        "Respiratory Viral Infection"
      ],
      "interventions": [
        {
          "name": "N95 mask",
          "type": "DEVICE"
        },
        {
          "name": "Nordell single E-100 layer mask",
          "type": "DEVICE"
        },
        {
          "name": "Nordell double E-100 layer mask",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 41,
      "start_date": "2021-04-09",
      "completion_date": "2022-10-27",
      "has_results": true,
      "last_update_posted_date": "2023-07-07",
      "last_synced_at": "2026-10-05T01:54:35.882Z",
      "location_count": 1,
      "location_summary": "Mankato, Minnesota",
      "locations": [
        {
          "city": "Mankato",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04826809"
    },
    {
      "nct_id": "NCT01426256",
      "title": "Vitamin D for Enhancing the Immune System in Cystic Fibrosis (DISC Study)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Cystic Fibrosis",
        "Respiratory Tract Infections"
      ],
      "interventions": [
        {
          "name": "Cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 91,
      "start_date": "2011-10",
      "completion_date": "2017-07",
      "has_results": false,
      "last_update_posted_date": "2017-07-13",
      "last_synced_at": "2026-10-05T01:54:35.882Z",
      "location_count": 5,
      "location_summary": "Birmingham, Alabama • Atlanta, Georgia • Iowa City, Iowa + 2 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01426256"
    }
  ]
}