COVID-19 Breakthrough Infection in Fully Vaccinated People and in People Who Received a Booster Dose
Public ClinicalTrials.gov record NCT05392075. 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.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
A novel coronavirus, SARS-CoV-2 (formerly known as the 2019 novel coronavirus \[2019-nCoV\]) was identified as the agent that caused an outbreak of pneumonia (termed COVID-19) in Wuhan, China in December 2019. The virus quickly spread to other countries and on March 11, 2020, the World Health Organization (WHO) declared COVID-19 a pandemic. By March 2021, many nations and organizations embarked on finding a cure or vaccine for this devastating viral infection. The Pfizer COVID-19 mRNA vaccine was the first to obtain emergency use authorization (EUA) from the Food \& Drug Administration (FDA) on December 11, 2020, followed by the Moderna COVID-19 mRNA vaccine on December 18, 2020, and the Janssen COVID-19 viral vector vaccine on February 27, 2021. The mRNA vaccines and the viral vector vaccine are designed based on the spike protein of SARS-COV-2. These vaccines had been administered to millions of Americans prior to July 2021.
Study identification
- NCT ID
- NCT05392075
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 100 participants
Conditions and interventions
Conditions
Interventions
- Pfizer COVID-19 mRNA vaccine Biological
- Moderna COVID-19 mRNA vaccine Biological
Biological
Eligibility (public fields only)
- Age range
- 18 Years to 100 Years
- Sex
- All
- Healthy volunteers
- Not listed
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Mar 14, 2023
- Primary completion
- Mar 14, 2023
- Completion
- Aug 16, 2023
- Last update posted
- Mar 23, 2026
2023
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Methodist Dallas Medical Center | Dallas | Texas | 75203 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT05392075, 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 Mar 23, 2026 · Synced Sep 3, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT05392075 live on ClinicalTrials.gov.