{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Immunity+to+COVID-19&page=2",
    "query": {
      "condition": "Immunity to COVID-19",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 50,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Immunity+to+COVID-19&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Immunity+to+COVID-19&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-02T09:19:50.212Z",
  "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": "NCT06848309",
      "title": "Dissecting Human Immune Responses to Infection With Influenza or SARS-CoV-2",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Influenza",
        "SARS-CoV-2 (COVID-19) Infection",
        "Immune Response of Host"
      ],
      "interventions": [
        {
          "name": "Bronchoscopy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 300,
      "start_date": "2025-03-07",
      "completion_date": "2029-10",
      "has_results": false,
      "last_update_posted_date": "2026-03-12",
      "last_synced_at": "2026-10-02T09:19:50.212Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06848309"
    },
    {
      "nct_id": "NCT04495764",
      "title": "Registry of Sustained Immunity to COVID-19 Among ESKD Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "SARS-CoV-2 Infection",
        "Anti-SARS-CoV-2 Infection"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Davita Clinical Research",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 2315,
      "start_date": "2020-07-20",
      "completion_date": "2021-02-12",
      "has_results": false,
      "last_update_posted_date": "2021-05-27",
      "last_synced_at": "2026-10-02T09:19:50.212Z",
      "location_count": 12,
      "location_summary": "Victorville, California • Bridgeport, Connecticut • Minneapolis, Minnesota + 8 more",
      "locations": [
        {
          "city": "Victorville",
          "state": "California"
        },
        {
          "city": "Bridgeport",
          "state": "Connecticut"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Las Vegas",
          "state": "Nevada"
        },
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04495764"
    },
    {
      "nct_id": "NCT05213000",
      "title": "Adjuvant Effect of Physical Exercise on Immune Response to COVID-19 Vaccination and Interactions With Stress",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Immunization"
      ],
      "interventions": [
        {
          "name": "Exercise",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Iowa State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 80,
      "start_date": "2021-03-01",
      "completion_date": "2026-09-30",
      "has_results": false,
      "last_update_posted_date": "2023-08-24",
      "last_synced_at": "2026-10-02T09:19:50.212Z",
      "location_count": 1,
      "location_summary": "Ames, Iowa",
      "locations": [
        {
          "city": "Ames",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05213000"
    },
    {
      "nct_id": "NCT04794829",
      "title": "Natural History of Systemic and Nasal Mucosal Immunity to Influenza and SARS-CoV-2 in Adults After Vaccination",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Influenza",
        "COVID-19"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 75,
      "start_date": "2021-08-19",
      "completion_date": "2026-07-28",
      "has_results": false,
      "last_update_posted_date": "2026-07-30",
      "last_synced_at": "2026-10-02T09:19:50.212Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04794829"
    },
    {
      "nct_id": "NCT05972993",
      "title": "A Safety and Immune Response Study to Evaluate Varying Doses of an mRNA Vaccine Against Coronavirus Disease 2019 (COVID-19) in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "mRNA-CR-04 vaccine 10μg",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-CR-04 vaccine 30μg",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-CR-04 vaccine 100μg",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "mRNA-CR-04 vaccine 3μg",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 114,
      "start_date": "2023-08-07",
      "completion_date": "2024-10-14",
      "has_results": true,
      "last_update_posted_date": "2025-05-28",
      "last_synced_at": "2026-10-02T09:19:50.212Z",
      "location_count": 4,
      "location_summary": "San Diego, California • Melbourne, Florida • Peoria, Illinois + 1 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Melbourne",
          "state": "Florida"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05972993"
    },
    {
      "nct_id": "NCT04758962",
      "title": "A Study of the Safety of and Immune Response to Varying Doses of a Vaccine Against COVID-19 in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Virus Diseases"
      ],
      "interventions": [
        {
          "name": "1 µg CoV2 SAM (LNP)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 10,
      "start_date": "2021-02-15",
      "completion_date": "2022-04-19",
      "has_results": true,
      "last_update_posted_date": "2026-08-24",
      "last_synced_at": "2026-10-02T09:19:50.212Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04758962"
    },
    {
      "nct_id": "NCT04562285",
      "title": "Sustained Immunity to COVID-19 as Measured by SARS-CoV-2 Serology Assays",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Serologic immunoassays to SARS-CoV-2 antibodies",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Henry Ford Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 829,
      "start_date": "2020-06-23",
      "completion_date": "2024-06-07",
      "has_results": false,
      "last_update_posted_date": "2025-12-03",
      "last_synced_at": "2026-10-02T09:19:50.212Z",
      "location_count": 1,
      "location_summary": "Detroit, Michigan",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04562285"
    },
    {
      "nct_id": "NCT06460324",
      "title": "A Study to Assess COVID-19 Vaccination Immune Response in Multiple Sclerosis Patients Treated With Ofatumumab",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 38,
      "start_date": "2022-05-20",
      "completion_date": "2023-07-03",
      "has_results": false,
      "last_update_posted_date": "2024-06-14",
      "last_synced_at": "2026-10-02T09:19:50.212Z",
      "location_count": 1,
      "location_summary": "East Hanover, New Jersey",
      "locations": [
        {
          "city": "East Hanover",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06460324"
    },
    {
      "nct_id": "NCT04852276",
      "title": "COVID-19 Vaccination and Outcomes in Individuals With and Without Immune Deficiencies and Dysregulations",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Immunodeficiencies",
        "Immune Dysregulations"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "3 Years and older"
      },
      "enrollment_count": 308,
      "start_date": "2021-04-20",
      "completion_date": "2023-08-31",
      "has_results": true,
      "last_update_posted_date": "2024-10-01",
      "last_synced_at": "2026-10-02T09:19:50.212Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04852276"
    },
    {
      "nct_id": "NCT05046561",
      "title": "Study to Reinforce Immunity (STRI) Phase 2 Clinical Trial",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "STRI Formula",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eyecheck, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 598,
      "start_date": "2021-11-04",
      "completion_date": "2023-08",
      "has_results": false,
      "last_update_posted_date": "2022-09-09",
      "last_synced_at": "2026-10-02T09:19:50.212Z",
      "location_count": 13,
      "location_summary": "Coral Gables, Florida • Doral, Florida • Medley, Florida + 4 more",
      "locations": [
        {
          "city": "Coral Gables",
          "state": "Florida"
        },
        {
          "city": "Doral",
          "state": "Florida"
        },
        {
          "city": "Doral",
          "state": "Florida"
        },
        {
          "city": "Medley",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05046561"
    }
  ]
}