{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Respiratory+Infections+in+Old+Age",
    "query": {
      "condition": "Respiratory Infections in Old Age"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 78,
    "total_pages": 8,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Respiratory+Infections+in+Old+Age&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-23T09:22:30.116Z",
  "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": "NCT04649151",
      "title": "A Study to Evaluate the Safety, Reactogenicity, and Effectiveness of mRNA-1273 Vaccine in Adolescents 12 to <18 Years Old to Prevent COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1273.222",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "12 Years to 18 Years"
      },
      "enrollment_count": 4328,
      "start_date": "2020-12-09",
      "completion_date": "2024-06-14",
      "has_results": true,
      "last_update_posted_date": "2025-09-15",
      "last_synced_at": "2026-07-23T09:22:30.116Z",
      "location_count": 48,
      "location_summary": "Banning, California • La Mesa, California • Lake Worth, Florida + 41 more",
      "locations": [
        {
          "city": "Banning",
          "state": "California"
        },
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "Lake Worth",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Chamblee",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04649151"
    },
    {
      "nct_id": "NCT00609635",
      "title": "Association Between Cytokines and Severity of Respiratory Syncytial Virus (RSV)-Induced Illness in the Elderly",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Respiratory Syncytial Virus Infections"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "West Penn Allegheny Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2007-11",
      "completion_date": "2009-04",
      "has_results": false,
      "last_update_posted_date": "2009-04-06",
      "last_synced_at": "2026-07-23T09:22:30.116Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00609635"
    },
    {
      "nct_id": "NCT02272101",
      "title": "Rhinitis in the Elderly: The Role of Vitamin D",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Rhinitis"
      ],
      "interventions": [
        {
          "name": "Vitamin D versus placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Rohr and Columbo Asthma, Allergy and Immunology Specialists, P.C.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2013-11",
      "completion_date": "2014-03",
      "has_results": false,
      "last_update_posted_date": "2014-10-22",
      "last_synced_at": "2026-07-23T09:22:30.116Z",
      "location_count": 2,
      "location_summary": "Bryn Mawr, Pennsylvania",
      "locations": [
        {
          "city": "Bryn Mawr",
          "state": "Pennsylvania"
        },
        {
          "city": "Bryn Mawr",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02272101"
    },
    {
      "nct_id": "NCT07388173",
      "title": "Functional Impact of Acute Respiratory Viral Infections in Older Adults",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Respiratory Infections in Old Age"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "University Hospital, Grenoble",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 1600,
      "start_date": "2026-01-15",
      "completion_date": "2028-06-15",
      "has_results": false,
      "last_update_posted_date": "2026-05-08",
      "last_synced_at": "2026-07-23T09:22:30.116Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07388173"
    },
    {
      "nct_id": "NCT01855945",
      "title": "Safety and Immunogenicity of Three Dosage Levels of Swine Influenza Vaccine in Children Ages 3 to <9 Years, Adolescents 9 to <18 Years, Adults 18 to <65 Years and Elderly 65 Years and Older.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Prophylaxis of A/H3N2v Influenza"
      ],
      "interventions": [
        {
          "name": "Swine Influenza",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Novartis Vaccines",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "92 Years",
        "sex": "ALL",
        "summary": "3 Years to 92 Years"
      },
      "enrollment_count": 627,
      "start_date": "2013-05",
      "completion_date": "2014-09",
      "has_results": true,
      "last_update_posted_date": "2016-02-17",
      "last_synced_at": "2026-07-23T09:22:30.116Z",
      "location_count": 11,
      "location_summary": "Redding, California • Sacramento, California • Lenexa, Kansas + 8 more",
      "locations": [
        {
          "city": "Redding",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Lenexa",
          "state": "Kansas"
        },
        {
          "city": "Wichita",
          "state": "Kansas"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01855945"
    },
    {
      "nct_id": "NCT00170495",
      "title": "Acute Viral Respiratory Infections in Elderly",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Respiratory Infections, Acute"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 3000,
      "start_date": "2004-09",
      "completion_date": "2006-07",
      "has_results": false,
      "last_update_posted_date": "2010-08-27",
      "last_synced_at": "2026-07-23T09:22:30.116Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00170495"
    },
    {
      "nct_id": "NCT00963157",
      "title": "Sanofi H1N1 Influenza Vaccine Administered at Different Dose Levels With and Without AS03 Adjuvant in Healthy Adult and Elderly Populations",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "AS03",
          "type": "DRUG"
        },
        {
          "name": "Influenza Virus Vaccine, Monovalent A/H1N1 A/California/7/2009 NYMC X-179A",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 789,
      "start_date": "2009-09",
      "completion_date": "2010-12",
      "has_results": true,
      "last_update_posted_date": "2014-12-24",
      "last_synced_at": "2026-07-23T09:22:30.116Z",
      "location_count": 7,
      "location_summary": "Stanford, California • Decatur, Georgia • Iowa City, Iowa + 3 more",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00963157"
    },
    {
      "nct_id": "NCT03312231",
      "title": "Sanofi 2017 H7N9 With/Without AS03 in Adults/Elderly",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Avian Influenza",
        "Influenza Immunisation"
      ],
      "interventions": [
        {
          "name": "AS03",
          "type": "DRUG"
        },
        {
          "name": "Inactivated influenza H7N9 vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Phosphate Buffered Saline (PBS) diluent",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "19 Years to 99 Years"
      },
      "enrollment_count": 720,
      "start_date": "2018-02-14",
      "completion_date": "2019-09-26",
      "has_results": true,
      "last_update_posted_date": "2024-09-19",
      "last_synced_at": "2026-07-23T09:22:30.116Z",
      "location_count": 5,
      "location_summary": "Decatur, Georgia • Iowa City, Iowa • Baltimore, Maryland + 2 more",
      "locations": [
        {
          "city": "Decatur",
          "state": "Georgia"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03312231"
    },
    {
      "nct_id": "NCT01827462",
      "title": "Comparison of Immune Responses to Influenza Vaccine In Adults of Different Ages (SLVP015 2007-2017)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Trivalent, inactivated influenza vaccine (TIV)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Quadrivalent, inactivated influenza vaccine (IIV4)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "High-Dose Trivalent, inactivated influenza vaccine (TIV High-Dose)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 136,
      "start_date": "2007-10",
      "completion_date": "2017-03",
      "has_results": true,
      "last_update_posted_date": "2017-07-11",
      "last_synced_at": "2026-07-23T09:22:30.116Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01827462"
    },
    {
      "nct_id": "NCT00775450",
      "title": "Influenza Vaccine Revaccination in Ambulatory Elderly Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza",
        "Orthomyxovirus Infection",
        "Myxovirus Infection"
      ],
      "interventions": [
        {
          "name": "Influenza Virus Vaccine USP Trivalent Types A and B",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 807,
      "start_date": "2008-10",
      "completion_date": "2009-07",
      "has_results": true,
      "last_update_posted_date": "2013-12-31",
      "last_synced_at": "2026-07-23T09:22:30.116Z",
      "location_count": 28,
      "location_summary": "Hoover, Alabama • Mobile, Alabama • Chandler, Arizona + 24 more",
      "locations": [
        {
          "city": "Hoover",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00775450"
    }
  ]
}