Independent directory Public ClinicalTrials.gov records United States
Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 2, 2026, 8:01 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–5 of 5 matching trials from the live ClinicalTrials.gov search.
Conditions
COVID-19
Interventions
Primary Exposure Status of Pfizer-BioNTech COVID-19 Vaccine, BNT162b2 BA.4/5 bivalent, XBB.1.5-adapted vaccinated
Biological
Lead sponsor
Pfizer
Industry
Eligibility
0 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Pasadena, California
Conditions
COVID-19
Interventions
Pfizer-BioNTech BNT162b2 COVID-19 Vaccinated, Not vaccinated with 2024-2025 formulated COVID-19 vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
5 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
New York, New York
Conditions
Immunocompromised, Immunosuppressed, Covid-19, SARS-COV-2, SARS-COV-2 Infection, Breakthrough Infection
Interventions
BNT162b2 (Tozinameran)
Biological
Lead sponsor
Pfizer
Industry
Eligibility
12 Years and older
Enrollment
1,277,747 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
New York, New York
Conditions
Adverse Reaction to Vaccine, COVID19 Vaccine
Interventions
BNT162b2, mRNA-1273, AZD1222, CoronaVac, Sinopharm, Gam-COVID-Vac, JNJ-78436735, CVnCoV, NVX-CoV2373, BBV152
Biological
Lead sponsor
Masaryk University
Other
Eligibility
18 Years and older
Enrollment
30,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
SARS-CoV-2, COVID-19, Post-Acute COVID-19 Syndrome
Interventions
Pfizer-BioNTech COVID-19 mRNA vaccine
Biological
Lead sponsor
Pfizer
Industry
Eligibility
6 Months and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
New York, New York