{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Infections%2C+Respiratory+Tract&page=3",
    "query": {
      "condition": "Infections, Respiratory Tract",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 4424,
    "total_pages": 443,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Infections%2C+Respiratory+Tract&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Infections%2C+Respiratory+Tract&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-04T18:03:04.815Z",
  "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": "NCT04569786",
      "title": "Dose Ranging Trial to Assess Safety and Immunogenicity of V590 (COVID-19 Vaccine) in Healthy Adults (V590-001)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Coronavirus Disease (COVID-19)"
      ],
      "interventions": [
        {
          "name": "V590",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Merck Sharp & Dohme LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 232,
      "start_date": "2020-10-29",
      "completion_date": "2021-02-18",
      "has_results": true,
      "last_update_posted_date": "2021-12-29",
      "last_synced_at": "2026-10-04T18:03:04.815Z",
      "location_count": 7,
      "location_summary": "Tempe, Arizona • Miami, Florida • South Miami, Florida + 4 more",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "South Miami",
          "state": "Florida"
        },
        {
          "city": "Springfield",
          "state": "Missouri"
        },
        {
          "city": "Lincoln",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04569786"
    },
    {
      "nct_id": "NCT00760851",
      "title": "Yogurt Study in Children 2-4 Years Old Attending Daycare",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Infections, Respiratory",
        "Diarrhea"
      ],
      "interventions": [
        {
          "name": "probiotic strain Bb-12",
          "type": "OTHER"
        },
        {
          "name": "no Bb-12",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Georgetown University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "4 Years",
        "sex": "ALL",
        "summary": "2 Years to 4 Years"
      },
      "enrollment_count": 190,
      "start_date": "2008-09",
      "completion_date": "2010-07",
      "has_results": false,
      "last_update_posted_date": "2011-03-18",
      "last_synced_at": "2026-10-04T18:03:04.815Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00760851"
    },
    {
      "nct_id": "NCT04766788",
      "title": "Studying Students at Risk for COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Wearable devices, saliva samples, survey measures",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2381,
      "start_date": "2020-09-03",
      "completion_date": "2023-04-18",
      "has_results": false,
      "last_update_posted_date": "2023-12-29",
      "last_synced_at": "2026-10-04T18:03:04.815Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04766788"
    },
    {
      "nct_id": "NCT01597973",
      "title": "Trial for the Treatment of Extensively Drug-Resistant Gram-negative Bacilli (OVERCOME)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Pneumonia",
        "Blood Stream Infection"
      ],
      "interventions": [
        {
          "name": "colistin and meropenem",
          "type": "DRUG"
        },
        {
          "name": "colistin and placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "95 Years",
        "sex": "ALL",
        "summary": "18 Years to 95 Years"
      },
      "enrollment_count": 467,
      "start_date": "2012-10-06",
      "completion_date": "2020-08-09",
      "has_results": true,
      "last_update_posted_date": "2022-11-14",
      "last_synced_at": "2026-10-04T18:03:04.815Z",
      "location_count": 6,
      "location_summary": "Miami, Florida • Detroit, Michigan • Royal Oak, Michigan + 2 more",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Royal Oak",
          "state": "Michigan"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01597973"
    },
    {
      "nct_id": "NCT06189053",
      "title": "A Study to Assess Long-term Outcomes of Myocarditis Following Administration of COVID-19 mRNA Vaccine (SPIKEVAX)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Myocarditis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1500,
      "start_date": "2022-04-30",
      "completion_date": "2028-10-31",
      "has_results": false,
      "last_update_posted_date": "2025-08-01",
      "last_synced_at": "2026-10-04T18:03:04.815Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06189053"
    },
    {
      "nct_id": "NCT03346772",
      "title": "Study of Immune Responses to Influenza Vaccination",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza Vaccination"
      ],
      "interventions": [
        {
          "name": "Influenza vaccination",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2017-10-20",
      "completion_date": "2026-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-10-04T18:03:04.815Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03346772"
    },
    {
      "nct_id": "NCT04944095",
      "title": "Change in Antibody Levels Following SARS-CoV-2 (Covid-19) Vaccinations",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid-19",
        "Subjects Vaccinated Against Covid-19"
      ],
      "interventions": [
        {
          "name": "Change in SARS-CoV-2 Antibody Levels",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Dr. Sidney J. Stohs",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 10000,
      "start_date": "2021-08-10",
      "completion_date": "2024-12-31",
      "has_results": false,
      "last_update_posted_date": "2022-08-29",
      "last_synced_at": "2026-10-04T18:03:04.815Z",
      "location_count": 1,
      "location_summary": "Southlake, Texas",
      "locations": [
        {
          "city": "Southlake",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04944095"
    },
    {
      "nct_id": "NCT02896257",
      "title": "De-implementing Inhaled Steroids to Improve Care and Safety in COPD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Treatment of Chronic Obstructive Pulmonary Disease"
      ],
      "interventions": [
        {
          "name": "Guideline treatment recommendations",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 181,
      "start_date": "2016-09-06",
      "completion_date": "2021-06-30",
      "has_results": true,
      "last_update_posted_date": "2023-07-27",
      "last_synced_at": "2026-10-04T18:03:04.815Z",
      "location_count": 2,
      "location_summary": "Bedford, Massachusetts • Seattle, Washington",
      "locations": [
        {
          "city": "Bedford",
          "state": "Massachusetts"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02896257"
    },
    {
      "nct_id": "NCT06361875",
      "title": "A Study to Investigate the Safety and Immunogenicity of the Quadrivalent Influenza mRNA Vaccines in Adults Aged 18 Years and Above",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Influenza Immunization",
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "Quadrivalent Influenza mRNA Vaccine MRT5421",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Quadrivalent Influenza mRNA Vaccine MRT5424",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Quadrivalent Influenza mRNA Vaccine MRT5429",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Quadrivalent Influenza Standard Dose Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Quadrivalent Influenza High-Dose Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Quadrivalent Recombinant Influenza Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 908,
      "start_date": "2024-04-01",
      "completion_date": "2025-06-09",
      "has_results": true,
      "last_update_posted_date": "2026-08-04",
      "last_synced_at": "2026-10-04T18:03:04.815Z",
      "location_count": 11,
      "location_summary": "San Diego, California • Hialeah, Florida • Hollywood, Florida + 8 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Hialeah",
          "state": "Florida"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06361875"
    },
    {
      "nct_id": "NCT05526716",
      "title": "A Study to Evaluate the Safety, Tolerability, and Immunogenicity of V116 When Administered Concomitantly With Influenza Vaccine in Adults 50 Years of Age or Older (V116-005, STRIDE-5)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Pneumonia, Pneumococcal"
      ],
      "interventions": [
        {
          "name": "V116",
          "type": "BIOLOGICAL"
        },
        {
          "name": "QIV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Matching Placebo for V116",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Merck Sharp & Dohme LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 1080,
      "start_date": "2022-09-23",
      "completion_date": "2023-06-21",
      "has_results": true,
      "last_update_posted_date": "2025-10-29",
      "last_synced_at": "2026-10-04T18:03:04.815Z",
      "location_count": 56,
      "location_summary": "Phoenix, Arizona • Canoga Park, California • La Mesa, California + 46 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Canoga Park",
          "state": "California"
        },
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "Montclair",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05526716"
    }
  ]
}