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Completed Phase 2Phase 3 Interventional Results available

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

ClinicalTrials.gov ID: NCT05047601

Public ClinicalTrials.gov record NCT05047601. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 19, 2026, 5:06 AM EDT

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

Official title

A PHASE 2/3, RANDOMIZED, DOUBLE-BLIND, DOUBLE-DUMMY, PLACEBO CONTROLLED STUDY TO EVALUATE THE SAFETY AND EFFICACY OF 2 REGIMENS OF ORALLY ADMINISTERED PF 07321332/RITONAVIR IN PREVENTING SYMPTOMATIC SARS-COV-2 INFECTION IN ADULT HOUSEHOLD CONTACTS OF AN INDIVIDUAL WITH SYMPTOMATIC COVID-19

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The purpose of this clinical trial is to learn whether the study medicine prevent symptoms of COVID-19 in adults who have been exposed to household member(s) with a confirmed symptomatic COVID-19 infection. All participants in the study will receive treatment for COVID-19 as needed, based on their regular doctor's recommendation. Two-thirds of participants will also receive two study medicines (PF-07321332 and ritonavir) by mouth twice a day for either five or ten days. We will compare the experiences of people receiving the study medicines to those of the people who do not. This will help us determine if the study medicines are safe and effective

Study identification

NCT ID
NCT05047601
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2, Phase 3
Lead sponsor
Pfizer
Industry
Enrollment
2,954 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Sep 9, 2021 (Actual)
Primary completion
Apr 12, 2022 (Actual)
Completion
Apr 12, 2022 (Actual)
Last update posted
May 6, 2023

2021 – 2022

United States locations

U.S. sites
64
U.S. states
12
U.S. cities
39
Facility City State ZIP Site status
Cahaba Research Inc Pelham Alabama 35124 —
The Institute for Liver Health dba Arizona Clinical Trials Tucson Arizona 85712 —
Ascada Health PC Fullerton California 92835 —
Optimus Medical Group San Francisco California 94102 —
Synergy Healthcare Bradenton Florida 34208 —
MOORE Clinical Research, Inc. Brandon Florida 33511 —
TrueBlue Clinical Research Brandon Florida 33511 —
Herco Medical and Research Center Inc Coral Gables Florida 33134 —
Advance Clinical Research Group Cutler Bay Florida 33157 —
Beautiful Minds Clinical Research Center Cutler Bay Florida 33157 —
Qway Research Hialeah Florida 33010 —
Eastern Research Inc Hialeah Florida 33013 —
Inpatient Research Clinic Hialeah Florida 33013 —
Doral Medical Research,LLC Hialeah Florida 33016 —
Unlimited Medical Research Group, LLC Hialeah Gardens Florida 33018 —
ASCLEPES Research Centers Lutz Florida 33549 —
Angels Clinical Research Institute Miami Florida 33122 —
LCC Medical Research Institute, LLC Miami Florida 33126 —
Premium Medical Research Corp Miami Florida 33126 —
Global Health Clinical Trials Corp Miami Florida 33135 —
South Florida Research Center, Inc. Miami Florida 33135 —
University of Miami Health System Miami Florida 33136 —
I.V.A.M. Clinical & Investigational Center, LLC Miami Florida 33144 —
Medical Research of Westchester Inc Miami Florida 33165 —
C'A Research Miami Florida 33174 —
ProLive Medical Research, Corp. Miami Florida 33175 —
Entrust Clinical Research Miami Florida 33176 —
Reed Medical Research Miami Florida 33176 —
Kendall South Medical Center, Inc. Miami Florida 33185 —
Clinical Site Partners, Inc dba CSP Miami Miami Florida 33186 —
Coral Research Clinic Corp Miami Florida 33186 —
Pro-Care Research Center, Corp. Miami Gardens Florida 33014 —
Savin Medical Group, LLC Miami Lakes Florida 33014 —
Omega Research Orlando Orlando Florida 32808 —
NAPA Research LLC Pompano Beach Florida 33064 —
CDC Research Institute, LLC Port Saint Lucie Florida 34952 —
USPA Advance Concept Medical Research Group LLC South Miami Florida 33143 —
ASCLEPES Research Centers Spring Hill Florida 34609 —
GCP, Global Clinical Professionals St. Petersburg Florida 33705 —
Sunrise Research Institute Sunrise Florida 33325 —
Santos Research Center, CORP Tampa Florida 33615 —
Research by Design, LLC Chicago Illinois 60643 —
Accellacare Ames Iowa 50010 —
McFarland Clinic, PC Ames Iowa 50010 —
Southern Clinical Research Associates. LLC Metairie Louisiana 70001 —
Meridian Clinical Research, LLC Grand Island Nebraska 68803 —
Quality Clinical Research Inc Omaha Nebraska 68112 —
Quality Clinical Research Omaha Nebraska 68114 —
Walmart Las Vegas Nevada 89108 —
Excel Clinical research Las Vegas Nevada 89109 —
Walgreens Las Vegas Nevada 89121 —
NYC Health + Hospitals / Harlem New York New York 10037 —
Monroe Biomedical Research Monroe North Carolina 28112 —
Innovo Research: Wilmington Health Wilmington North Carolina 28401 —
PharmaTex Research, LLC Amarillo Texas 79109 —
Conroe Willis Medical Research Conroe Texas 77304 —
South Texas Clinical Research Corpus Christi Texas 78413 —
SingnatureCare Emergency Center Houston Texas 77008 —
Trio Clinical Trials, LLC Houston Texas 77008 —
C & R Research Services USA Houston Texas 77022 —
SMS Clinical Research, LLC Mesquite Texas 75149 —
Epic Medical Research Red Oak Texas 75154 —
Sun Research Institute San Antonio Texas 78215 —
Tranquility Research Webster Texas 77598 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 106 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT05047601, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted May 6, 2023 · Synced Oct 19, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT05047601 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →