{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Covid-19+Vaccine&page=12", "query": { "condition": "Covid-19 Vaccine", "page": 12 }, "page_size": 10 }, "pagination": { "page": 12, "page_size": 10, "total_count": 329, "total_pages": 33, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Covid-19+Vaccine&page=13&page_size=10", "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Covid-19+Vaccine&page=11&page_size=10" }, "source": "remote", "last_synced_at": "2026-10-15T01:39:29.259Z", "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": "NCT04927065", "title": "A Study to Evaluate the Immunogenicity and Safety of mRNA Vaccine Boosters for SARS-CoV-2 (COVID-19) Variants", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2", "PHASE3" ], "conditions": [ "SARS-CoV-2" ], "interventions": [ { "name": "mRNA-1273.211", "type": "BIOLOGICAL" }, { "name": "mRNA-1273", "type": "BIOLOGICAL" }, { "name": "mRNA-1273.617.2", "type": "BIOLOGICAL" }, { "name": "mRNA-1273.213", "type": "BIOLOGICAL" }, { "name": "mRNA-1273.529", "type": "BIOLOGICAL" }, { "name": "mRNA-1273.214", "type": "BIOLOGICAL" }, { "name": "mRNA-1273.222", "type": "BIOLOGICAL" }, { "name": "mRNA-1273.815", "type": "BIOLOGICAL" }, { "name": "mRNA-1273.231", "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": 5161, "start_date": "2021-05-28", "completion_date": "2023-11-17", "has_results": true, "last_update_posted_date": "2025-02-28", "last_synced_at": "2026-10-15T01:39:29.259Z", "location_count": 23, "location_summary": "Sacramento, California • Hollywood, Florida • Jacksonville, Florida + 18 more", "locations": [ { "city": "Sacramento", "state": "California" }, { "city": "Hollywood", "state": "Florida" }, { "city": "Jacksonville", "state": "Florida" }, { "city": "Savannah", "state": "Georgia" }, { "city": "Sioux City", "state": "Iowa" } ], "official_url": "https://clinicaltrials.gov/study/NCT04927065" }, { "nct_id": "NCT05682625", "title": "Understanding COVID-19 Vaccine Immunity in Tissue and Blood", "overall_status": "WITHDRAWN", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "COVID-19 (Coronavirus Disease 2019)" ], "interventions": [ { "name": "No intervention", "type": "OTHER" } ], "intervention_types": [ "OTHER" ], "sponsor": "Stanford University", "sponsor_class": "OTHER", "healthy_volunteers": null, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 0, "start_date": "2024-10", "completion_date": "2029-09", "has_results": false, "last_update_posted_date": "2024-09-19", "last_synced_at": "2026-10-15T01:39:29.259Z", "location_count": 1, "location_summary": "Palo Alto, California", "locations": [ { "city": "Palo Alto", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT05682625" }, { "nct_id": "NCT06603090", "title": "Text4Vax: Text Message Reminders for Pediatric COVID-19 and Influenza Vaccines 2024-25 Season", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Influenza", "COVID-19", "Vaccination Hesitancy" ], "interventions": [ { "name": "Text message influenza vaccine reminders", "type": "BEHAVIORAL" }, { "name": "Text message COVID-19 vaccine reminders", "type": "BEHAVIORAL" }, { "name": "Text message influenza and COVID-19 vaccine reminders", "type": "BEHAVIORAL" } ], "intervention_types": [ "BEHAVIORAL" ], "sponsor": "Columbia University", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "6 Months", "maximum_age": "17 Years", "sex": "ALL", "summary": "6 Months to 17 Years" }, "enrollment_count": 66147, "start_date": "2024-10-02", "completion_date": "2025-04-30", "has_results": false, "last_update_posted_date": "2025-07-11", "last_synced_at": "2026-10-15T01:39:29.259Z", "location_count": 4, "location_summary": "Itasca, Illinois • New York, New York • Philadelphia, Pennsylvania", "locations": [ { "city": "Itasca", "state": "Illinois" }, { "city": "New York", "state": "New York" }, { "city": "Philadelphia", "state": "Pennsylvania" }, { "city": "Philadelphia", "state": "Pennsylvania" } ], "official_url": "https://clinicaltrials.gov/study/NCT06603090" }, { "nct_id": "NCT07051031", "title": "COVID-19 Reactogenicity", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "COVID-19" ], "interventions": [ { "name": "Nuvaxovid (NVX-CoV2705)", "type": "DRUG" }, { "name": "mNEXSPIKE mRNA-1283", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Marcel Curlin", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 1000, "start_date": "2025-10-01", "completion_date": "2026-06-14", "has_results": false, "last_update_posted_date": "2026-03-04", "last_synced_at": "2026-10-15T01:39:29.259Z", "location_count": 1, "location_summary": "Portland, Oregon", "locations": [ { "city": "Portland", "state": "Oregon" } ], "official_url": "https://clinicaltrials.gov/study/NCT07051031" }, { "nct_id": "NCT04470427", "title": "A Study to Evaluate Efficacy, Safety, and Immunogenicity of mRNA-1273 Vaccine in Adults Aged 18 Years and Older to Prevent COVID-19", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "SARS-CoV-2" ], "interventions": [ { "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": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 30415, "start_date": "2020-07-27", "completion_date": "2022-12-29", "has_results": true, "last_update_posted_date": "2024-03-21", "last_synced_at": "2026-10-15T01:39:29.259Z", "location_count": 100, "location_summary": "Birmingham, Alabama • Chandler, Arizona • Glendale, Arizona + 79 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Birmingham", "state": "Alabama" }, { "city": "Chandler", "state": "Arizona" }, { "city": "Glendale", "state": "Arizona" }, { "city": "Peoria", "state": "Arizona" } ], "official_url": "https://clinicaltrials.gov/study/NCT04470427" }, { "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": "2026-10-15T01:39:29.259Z", "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": "NCT05876377", "title": "Use and Effectiveness of COVID-19 Vaccines Using State Vaccine Registries and Insurance Claims Data", "overall_status": "TERMINATED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "SARS-CoV-2", "COVID-19", "Post-Acute COVID-19 Syndrome" ], "interventions": [ { "name": "Pfizer-BioNTech COVID-19 mRNA vaccine", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "6 Months", "maximum_age": null, "sex": "ALL", "summary": "6 Months and older" }, "enrollment_count": 1, "start_date": "2023-10-23", "completion_date": "2026-05-31", "has_results": false, "last_update_posted_date": "2026-09-15", "last_synced_at": "2026-10-15T01:39:29.259Z", "location_count": 1, "location_summary": "New York, New York", "locations": [ { "city": "New York", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT05876377" }, { "nct_id": "NCT07300839", "title": "A Study to Learn About a COVID-19 Vaccine in Healthy Adults 50 Through 64 Years of Age", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "COVID-19", "SARS-COV-2 Infection" ], "interventions": [ { "name": "BNT162b2 Vaccine", "type": "BIOLOGICAL" }, { "name": "Placebo", "type": "BIOLOGICAL" } ], "intervention_types": [ "BIOLOGICAL" ], "sponsor": "BioNTech SE", "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": 5240, "start_date": "2025-12-10", "completion_date": "2026-07-31", "has_results": false, "last_update_posted_date": "2026-04-13", "last_synced_at": "2026-10-15T01:39:29.259Z", "location_count": 196, "location_summary": "Anniston, Alabama • Athens, Alabama • Birmingham, Alabama + 148 more", "locations": [ { "city": "Anniston", "state": "Alabama" }, { "city": "Athens", "state": "Alabama" }, { "city": "Birmingham", "state": "Alabama" }, { "city": "Birmingham", "state": "Alabama" }, { "city": "Cullman", "state": "Alabama" } ], "official_url": "https://clinicaltrials.gov/study/NCT07300839" }, { "nct_id": "NCT04646239", "title": "Biomarkers of Trained Immunity Following MMR Vaccination", "overall_status": "COMPLETED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "Covid19" ], "interventions": [ { "name": "Heterologous stimuli", "type": "DIAGNOSTIC_TEST" }, { "name": "Neutralization assay", "type": "DIAGNOSTIC_TEST" } ], "intervention_types": [ "DIAGNOSTIC_TEST" ], "sponsor": "Washington University School of Medicine", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 96, "start_date": "2020-12-17", "completion_date": "2021-06-28", "has_results": false, "last_update_posted_date": "2021-11-26", "last_synced_at": "2026-10-15T01:39:29.259Z", "location_count": 1, "location_summary": "St Louis, Missouri", "locations": [ { "city": "St Louis", "state": "Missouri" } ], "official_url": "https://clinicaltrials.gov/study/NCT04646239" }, { "nct_id": "NCT05104840", "title": "A Randomized Study to Determine the Expression of the Furin Protein in Patients With SARS-CoV-2 and Vaccinated Against Coronavirus", "overall_status": "TERMINATED", "study_type": "OBSERVATIONAL", "phases": [], "conditions": [ "COVID-19", "SARS-CoV-2", "Furin", "RGMc Processing", "Paired Basic Amino Acid Cleaving Enzyme (PACE)" ], "interventions": [], "intervention_types": [], "sponsor": "Center Trials & Treatment", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 2432, "start_date": "2022-08-10", "completion_date": "2023-03-28", "has_results": false, "last_update_posted_date": "2023-03-29", "last_synced_at": "2026-10-15T01:39:29.259Z", "location_count": 4, "location_summary": "Jacksonville, Florida • Ocala, Florida • Charleston, South Carolina + 1 more", "locations": [ { "city": "Jacksonville", "state": "Florida" }, { "city": "Ocala", "state": "Florida" }, { "city": "Charleston", "state": "South Carolina" }, { "city": "Seattle", "state": "Washington" } ], "official_url": "https://clinicaltrials.gov/study/NCT05104840" } ] }