Characterizing SARS-CoV-2-specific Immunity in Individuals Who Have Recovered From COVID-19
Public ClinicalTrials.gov record NCT04403880. 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.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Characterizing SARS-CoV-2-specific Immunity in Convalescent Individuals
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of this study is to learn more about infection with and recovery from the virus called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Some people know this virus by the name "coronavirus." It can cause the disease called COVID-19. The information gained from the study will be used to help develop better tests for SARS-CoV-2 infection and COVID-19 disease and may help in developing future vaccines and treatments by allowing researchers to determine the difference between the body's immune response to natural SARS-CoV-2 infection and immunization with a SARS-CoV-2 vaccine.
Study identification
- NCT ID
- NCT04403880
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 760 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- May 13, 2020 (Actual)
- Primary completion
- Apr 21, 2022 (Actual)
- Completion
- Apr 21, 2022 (Actual)
- Last update posted
- Jan 12, 2026
2020 – 2022
United States locations
- U.S. sites
- 21
- U.S. states
- 14
- U.S. cities
- 18
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Alabama Vaccine CRS | Birmingham | Alabama | 35294 | — |
| UCLA CARE Center CRS | Los Angeles | California | 90035 | — |
| Bridge HIV CRS | San Francisco | California | 94143 | — |
| George Washington University CRS | Washington D.C. | District of Columbia | 20037-1894 | — |
| The Ponce de Leon Center CRS | Atlanta | Georgia | 30308-2012 | — |
| The Hope Clinic of the Emory Vaccine Center CRS | Decatur | Georgia | 30030 | — |
| Adolescent & Young Adult Research at The CORE Center (AYAR at CORE) | Chicago | Illinois | 60612 | — |
| New Orleans Adolescent Trials Unit CRS | New Orleans | Louisiana | 70112 | — |
| Johns Hopkins University CRS | Baltimore | Maryland | 21205 | — |
| Brigham and Women's Hospital Vaccine CRS (BWH VCRS) | Boston | Massachusetts | 02115-6110 | — |
| Fenway Health Clinical Research Site CRS | Boston | Massachusetts | 02215-4302 | — |
| New Jersey Medical School Clinical Research Center CRS | Newark | New Jersey | 07103 | — |
| Harlem Prevention Center CRS | New York | New York | 10027 | — |
| Columbia P&S CRS | New York | New York | 10032-3732 | — |
| New York Blood Center CRS | New York | New York | 10065 | — |
| University of Rochester Vaccines to Prevent HIV Infection CRS | Rochester | New York | 14642 | — |
| Bronx Prevention Research Center CRS | The Bronx | New York | 10451 | — |
| Chapel Hill CRS | Chapel Hill | North Carolina | 27599 | — |
| Penn Prevention CRS | Philadelphia | Pennsylvania | 19104 | — |
| Vanderbilt Vaccine CRS | Nashville | Tennessee | 37232-2582 | — |
| Seattle Vaccine and Prevention CRS | Seattle | Washington | 98109-1024 | — |
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 32 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04403880, 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 Jan 12, 2026 · Synced Oct 17, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT04403880 live on ClinicalTrials.gov.