{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Household+Contacts",
    "query": {
      "condition": "Household Contacts"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 14,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Household+Contacts&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-21T11:04:46.643Z",
  "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": "NCT04399252",
      "title": "Effect of Lactobacillus on the Microbiome of Household Contacts Exposed to COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Microbiome"
      ],
      "interventions": [
        {
          "name": "Lactobacillus rhamnosus GG",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Lactobacillus rhamnosus GG Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "1 Year and older"
      },
      "enrollment_count": 182,
      "start_date": "2020-06-24",
      "completion_date": "2021-07-08",
      "has_results": false,
      "last_update_posted_date": "2024-04-17",
      "last_synced_at": "2026-07-21T11:04:46.643Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04399252"
    },
    {
      "nct_id": "NCT03969212",
      "title": "Study to Assess the Efficacy of Baloxavir Marboxil Versus Placebo to Reduce Onward Transmission of Influenza A or B in Households",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Baloxavir Marboxil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hoffmann-La Roche",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "5 Years to 64 Years"
      },
      "enrollment_count": 4138,
      "start_date": "2019-10-10",
      "completion_date": "2024-05-10",
      "has_results": true,
      "last_update_posted_date": "2025-07-04",
      "last_synced_at": "2026-07-21T11:04:46.643Z",
      "location_count": 43,
      "location_summary": "Birmingham, Alabama • Pelham, Alabama • Phoenix, Arizona + 32 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Pelham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Canoga Park",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03969212"
    },
    {
      "nct_id": "NCT05047601",
      "title": "A Study of a Potential Oral Treatment to Prevent COVID-19 in Adults Who Are Exposed to Household Member(s) With a Confirmed Symptomatic COVID-19 Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "PF-07321332",
          "type": "DRUG"
        },
        {
          "name": "Placebo for PF-07321332",
          "type": "DRUG"
        },
        {
          "name": "Placebo for Ritonavir",
          "type": "DRUG"
        },
        {
          "name": "Ritonavir",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2954,
      "start_date": "2021-09-09",
      "completion_date": "2022-04-12",
      "has_results": true,
      "last_update_posted_date": "2023-05-06",
      "last_synced_at": "2026-07-21T11:04:46.643Z",
      "location_count": 64,
      "location_summary": "Pelham, Alabama • Tucson, Arizona • Fullerton, California + 36 more",
      "locations": [
        {
          "city": "Pelham",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Bradenton",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05047601"
    },
    {
      "nct_id": "NCT04452318",
      "title": "COVID-19 Study Assessing the Efficacy and Safety of Anti-Spike SARS CoV-2 Monoclonal Antibodies for Prevention of SARS CoV-2 Infection Asymptomatic in Healthy Adults and Adolescents Who Are Household Contacts to an Individual With a Positive SARS-CoV-2 RT-PCR Assay",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Healthy Participants"
      ],
      "interventions": [
        {
          "name": "REGN10933 + REGN10987",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Regeneron Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "1 Day",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "1 Day and older"
      },
      "enrollment_count": 3303,
      "start_date": "2020-07-13",
      "completion_date": "2021-10-04",
      "has_results": true,
      "last_update_posted_date": "2023-05-15",
      "last_synced_at": "2026-07-21T11:04:46.643Z",
      "location_count": 132,
      "location_summary": "Mesa, Arizona • Tucson, Arizona • La Mesa, California + 94 more",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "La Palma",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04452318"
    },
    {
      "nct_id": "NCT05687279",
      "title": "Study on a Live-attenuated Respiratory Syncytial Virus Vaccine for Assessment of Safety, Transmissibility, and Genetic Stability of the Vaccine Virus Among Close Contacts in Infants and Toddlers 6 to < 24 Months of Age in Puerto Rico (USA)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Respiratory Syncytial Virus Infection"
      ],
      "interventions": [
        {
          "name": "RSVt Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Control Group",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "Sanofi Pasteur, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "23 Months",
        "sex": "ALL",
        "summary": "6 Months to 23 Months"
      },
      "enrollment_count": 80,
      "start_date": "2023-02-06",
      "completion_date": "2024-12-27",
      "has_results": true,
      "last_update_posted_date": "2026-01-26",
      "last_synced_at": "2026-07-21T11:04:46.643Z",
      "location_count": 2,
      "location_summary": "Norfolk, Nebraska • Omaha, Nebraska",
      "locations": [
        {
          "city": "Norfolk",
          "state": "Nebraska"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05687279"
    },
    {
      "nct_id": "NCT04652648",
      "title": "Rapid Development and Implementation of a Remote ECG-monitored Prospective Randomized Clinical Trial During a Pandemic: Hydroxychloroquine Prophylaxis in COVID-19 Household Contacts",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Covid19",
        "Hydroxychloroquine",
        "Coronavirus Infection",
        "Transmission",
        "Prophylaxis"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bryn Mawr Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 54,
      "start_date": "2020-05-27",
      "completion_date": "2020-11-15",
      "has_results": false,
      "last_update_posted_date": "2020-12-03",
      "last_synced_at": "2026-07-21T11:04:46.643Z",
      "location_count": 3,
      "location_summary": "Bryn Mawr, Pennsylvania • Paoli, Pennsylvania • Wynnewood, Pennsylvania",
      "locations": [
        {
          "city": "Bryn Mawr",
          "state": "Pennsylvania"
        },
        {
          "city": "Paoli",
          "state": "Pennsylvania"
        },
        {
          "city": "Wynnewood",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04652648"
    },
    {
      "nct_id": "NCT05973084",
      "title": "COVID-19 Transmission and Morbidity in Malawi",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "SARS CoV 2 Infection",
        "SARS CoV 2 Vaccination"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Boston University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "5 Years to 75 Years"
      },
      "enrollment_count": 1500,
      "start_date": "2023-01-17",
      "completion_date": "2028-03",
      "has_results": false,
      "last_update_posted_date": "2026-05-28",
      "last_synced_at": "2026-07-21T11:04:46.643Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05973084"
    },
    {
      "nct_id": "NCT06094010",
      "title": "A Surveillance Study of Susceptibility to Baloxavir Marboxil in Pediatric Participants With Influenza and Transmission of Influenza to Household Contacts",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Baloxavir Marboxil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hoffmann-La Roche",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Weeks",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "3 Weeks to 11 Years"
      },
      "enrollment_count": 1100,
      "start_date": "2023-11-22",
      "completion_date": "2027-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-05-01",
      "last_synced_at": "2026-07-21T11:04:46.643Z",
      "location_count": 28,
      "location_summary": "Birmingham, Alabama • Harrisburg, Arkansas • Miami, Florida + 23 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Harrisburg",
          "state": "Arkansas"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Pensacola",
          "state": "Florida"
        },
        {
          "city": "Chamblee",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06094010"
    },
    {
      "nct_id": "NCT00570037",
      "title": "Feasibility of Cocooning Immunization Strategy With Influenza Vaccine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Influenza"
      ],
      "interventions": [
        {
          "name": "Trivalent inactivated influenza vaccine",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 544,
      "start_date": "2007-10",
      "completion_date": "2008-04",
      "has_results": true,
      "last_update_posted_date": "2013-06-24",
      "last_synced_at": "2026-07-21T11:04:46.643Z",
      "location_count": 2,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00570037"
    },
    {
      "nct_id": "NCT05777720",
      "title": "Cluster-Randomized Trial of Air Filtration and Ventilation to Reduce Covid19 Spread in Homes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Filtration Fan",
          "type": "DEVICE"
        },
        {
          "name": "Safe-home pamphlet",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Mid-week phone call",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "BEHAVIORAL"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 214,
      "start_date": "2023-01-30",
      "completion_date": "2025-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-02-19",
      "last_synced_at": "2026-07-21T11:04:46.643Z",
      "location_count": 2,
      "location_summary": "San Mateo, California • Stanford, California",
      "locations": [
        {
          "city": "San Mateo",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05777720"
    }
  ]
}