{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=mRNA-1273+%28Moderna+COVID-19+vaccine%29",
    "query": {
      "intervention": "mRNA-1273 (Moderna COVID-19 vaccine)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 44,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=mRNA-1273+%28Moderna+COVID-19+vaccine%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-07T18:44:03.181Z",
  "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": "NCT04813796",
      "title": "A Study to Evaluate Safety, Reactogenicity, and Immunogenicity of mRNA-1283 and mRNA-1273 Vaccines in Healthy Adults Between 18 Years and 55 Years of Age to Prevent COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "mRNA-1283",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 104,
      "start_date": "2021-03-11",
      "completion_date": "2023-07-25",
      "has_results": false,
      "last_update_posted_date": "2023-08-01",
      "last_synced_at": "2026-10-07T18:44:03.181Z",
      "location_count": 5,
      "location_summary": "Chandler, Arizona • San Diego, California • Melbourne, Florida + 2 more",
      "locations": [
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Melbourne",
          "state": "Florida"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        },
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04813796"
    },
    {
      "nct_id": "NCT05212610",
      "title": "Assessing Safety of Coronavirus Infection (COVID-19) Messenger RNA (mRNA) Vaccine Administration in the Setting of a Previous Adverse Reaction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "COVID-19",
        "Corona Virus Infection"
      ],
      "interventions": [
        {
          "name": "Pfizer-BioNTech mRNA COVID-19 vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Moderna mRNA COVID-19 vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 137,
      "start_date": "2022-03-21",
      "completion_date": "2025-03-07",
      "has_results": true,
      "last_update_posted_date": "2026-03-27",
      "last_synced_at": "2026-10-07T18:44:03.181Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05212610"
    },
    {
      "nct_id": "NCT04922944",
      "title": "Post COVID-19 Vaccination Analysis in Healthcare Worker Recipients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Covid19",
        "Vaccine Reaction"
      ],
      "interventions": [
        {
          "name": "COVID-19 vaccine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Huntington Memorial Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 167,
      "start_date": "2021-03-08",
      "completion_date": "2022-03-01",
      "has_results": false,
      "last_update_posted_date": "2024-09-19",
      "last_synced_at": "2026-10-07T18:44:03.181Z",
      "location_count": 1,
      "location_summary": "Pasadena, California",
      "locations": [
        {
          "city": "Pasadena",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04922944"
    },
    {
      "nct_id": "NCT04952402",
      "title": "SARS-CoV-2 Immune Responses After COVID-19 Therapy and Subsequent Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Covid19",
        "SARS-CoV2 Infection"
      ],
      "interventions": [
        {
          "name": "Study-provided Moderna mRNA-1273 COVID-19 vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Community-provided Moderna mRNA-1273 COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Community-Provided Pfizer-BioNTech BNT162b2 COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "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": 43,
      "start_date": "2021-07-09",
      "completion_date": "2023-01-10",
      "has_results": true,
      "last_update_posted_date": "2023-05-24",
      "last_synced_at": "2026-10-07T18:44:03.181Z",
      "location_count": 6,
      "location_summary": "Los Angeles, California • San Diego, California • Chicago, Illinois + 3 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04952402"
    },
    {
      "nct_id": "NCT05397223",
      "title": "A Study of Modified mRNA Vaccines in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "SARS-CoV-2",
        "Seasonal Influenza",
        "Respiratory Syncytial Virus",
        "Cytomegalovirus"
      ],
      "interventions": [
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1010",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1345",
          "type": "BIOLOGICAL"
        },
        {
          "name": "FLUAD®",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1647",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 308,
      "start_date": "2022-05-24",
      "completion_date": "2026-02-27",
      "has_results": false,
      "last_update_posted_date": "2026-03-12",
      "last_synced_at": "2026-10-07T18:44:03.181Z",
      "location_count": 8,
      "location_summary": "Hollywood, Florida • Savannah, Georgia • Sioux City, Iowa + 4 more",
      "locations": [
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Savannah",
          "state": "Georgia"
        },
        {
          "city": "Sioux City",
          "state": "Iowa"
        },
        {
          "city": "Lenexa",
          "state": "Kansas"
        },
        {
          "city": "Lincoln",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05397223"
    },
    {
      "nct_id": "NCT04889209",
      "title": "Delayed Heterologous SARS-CoV-2 Vaccine Dosing (Boost) After Receipt of EUA Vaccines",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Ad26.COV2.S",
          "type": "BIOLOGICAL"
        },
        {
          "name": "BNT162b2",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1273.211",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1273.222",
          "type": "BIOLOGICAL"
        },
        {
          "name": "SARS-CoV-2 rS/M1",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 867,
      "start_date": "2021-05-28",
      "completion_date": "2023-06-16",
      "has_results": true,
      "last_update_posted_date": "2025-04-20",
      "last_synced_at": "2026-10-07T18:44:03.181Z",
      "location_count": 10,
      "location_summary": "Decatur, Georgia • Baltimore, Maryland • New York, New York + 6 more",
      "locations": [
        {
          "city": "Decatur",
          "state": "Georgia"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04889209"
    },
    {
      "nct_id": "NCT07266558",
      "title": "A Study to Evaluate the Efficacy and Safety of mRNA-1283 and mRNA-1273 in Participants 50 to 64 Years of Age Without High-Risk Conditions for Severe Coronavirus Disease 2019 (COVID-19)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1283",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "50 Years to 64 Years"
      },
      "enrollment_count": 30000,
      "start_date": "2025-11-26",
      "completion_date": "2027-06-16",
      "has_results": false,
      "last_update_posted_date": "2026-09-28",
      "last_synced_at": "2026-10-07T18:44:03.181Z",
      "location_count": 150,
      "location_summary": "Birmingham, Alabama • Cullman, Alabama • Mobile, Alabama + 127 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Cullman",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Glendale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07266558"
    },
    {
      "nct_id": "NCT05765578",
      "title": "An Observational Study of Moderna COVID-19 Bivalent Vaccines (Original and Omicron BA.4/BA.5) and 2023 Updated mRNA COVID-19 Vaccines (XBB.1.5)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Moderna COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Moderna mRNA1273.222 Booster",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pfizer COVID-19 Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Moderna 2023 Updated COVID-19 vaccine (XBB.1.5)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pfizer 2023 Updated COVID-19 vaccine (XBB.1.5)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1713,
      "start_date": "2023-03-08",
      "completion_date": "2024-06-17",
      "has_results": false,
      "last_update_posted_date": "2024-07-31",
      "last_synced_at": "2026-10-07T18:44:03.181Z",
      "location_count": 1,
      "location_summary": "Culver City, California",
      "locations": [
        {
          "city": "Culver City",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05765578"
    },
    {
      "nct_id": "NCT05137236",
      "title": "A Study to Evaluate the Immunogenicity and Safety of mRNA-1283 COVID-19 Vaccine Boosters",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "mRNA-1283",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1283.211",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1273",
          "type": "BIOLOGICAL"
        },
        {
          "name": "mRNA-1283.529",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ModernaTX, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 540,
      "start_date": "2021-12-06",
      "completion_date": "2023-03-23",
      "has_results": true,
      "last_update_posted_date": "2025-07-17",
      "last_synced_at": "2026-10-07T18:44:03.181Z",
      "location_count": 17,
      "location_summary": "Phoenix, Arizona • Hollywood, Florida • Sunrise, Florida + 13 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Sunrise",
          "state": "Florida"
        },
        {
          "city": "Chamblee",
          "state": "Georgia"
        },
        {
          "city": "Metairie",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05137236"
    },
    {
      "nct_id": "NCT04969276",
      "title": "Study of a Quadrivalent High-Dose Influenza Vaccine and a Moderna COVID-19 Vaccine Administered Either Concomitantly or Singly in Participants 65 Years of Age and Older Previously Vaccinated With a 2-dose Schedule of Moderna COVID-19 Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Influenza Immunization",
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "Quadrivalent Inactivated Influenza High Dose",
          "type": "BIOLOGICAL"
        },
        {
          "name": "COVID-19 mRNA Vaccine (nucleoside modified)",
          "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": 306,
      "start_date": "2021-07-16",
      "completion_date": "2022-02-08",
      "has_results": true,
      "last_update_posted_date": "2025-09-12",
      "last_synced_at": "2026-10-07T18:44:03.181Z",
      "location_count": 6,
      "location_summary": "Glendale, Arizona • San Diego, California • Vista, California + 3 more",
      "locations": [
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Vista",
          "state": "California"
        },
        {
          "city": "Centennial",
          "state": "Colorado"
        },
        {
          "city": "Peoria",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04969276"
    }
  ]
}