An Observational Study of Moderna COVID-19 Bivalent Vaccines (Original and Omicron BA.4/BA.5) and 2023 Updated mRNA COVID-19 Vaccines (XBB.1.5)
Public ClinicalTrials.gov record NCT05765578. 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
DisCOVEries 2 - An Observational Study to Evaluate the Immunogenicity of mRNA COVID-19 Bivalent Vaccines (Original and Omicron BA.4/BA.5) and 2023 Updated mRNA COVID-19 Vaccines (XBB.1.5)
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The goal of this observational study is to analyze binding antibody levels in adults in the United States (US) after receiving coronavirus disease 2019 (COVID-19) bivalent boosters (original and omicron BA.4/5) and updated COVID-19 vaccines (XBB.1.5).
Study identification
- NCT ID
- NCT05765578
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 1,713 participants
Conditions and interventions
Conditions
Interventions
- Moderna COVID-19 Vaccine Biological
- Moderna mRNA1273.222 Booster Biological
- Pfizer COVID-19 Vaccine Biological
- Moderna 2023 Updated COVID-19 vaccine (XBB.1.5) Biological
- Pfizer 2023 Updated COVID-19 vaccine (XBB.1.5) Biological
Biological
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
- Mar 7, 2023
- Primary completion
- Jun 16, 2024
- Completion
- Jun 16, 2024
- Last update posted
- Jul 30, 2024
2023 – 2024
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Science37 | Culver City | California | 90230 | — |
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 NCT05765578, 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 Jul 30, 2024 · Synced Sep 4, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT05765578 live on ClinicalTrials.gov.