COVID-19 mRNA Vaccine is named as a drug or biological intervention in 2 clinical trials in our USA trial register, 1 of which is recruiting. Lead sponsors include CastleVax Inc. (1) and Invivyd, Inc. (1). Registered phases: Phase 2 and Phase 3. Conditions studied include COVID-19.
| NCT ID | Study | Phase | Status |
|---|---|---|---|
| NCT07655180 | Safety and Serum Virus Neutralizing Antibody Responses of VYD2311, a COVID-19 Vaccine, and Coadministered VYD2311 With a COVID-19 Vaccine (ClinicalTrials.gov ↗) COVID-19 |
Phase 3 | Recruiting |
| NCT07215520 | Safety and Tolerability of a Newcastle Disease Virus-Based Mucosal COVID-19 Vaccine in Previously Vaccinated Adults (ClinicalTrials.gov ↗) COVID-19 |
Phase 2 | Active, closed |
Registers list studies that are recruiting, about to open, active but closed to enrolment, or enrolling by invitation. The UK and USA registers cover industry-sponsored studies only. Trial titles and statuses are copied from the registry as published.
| Condition (as registered) | Trials |
|---|---|
| COVID-19 | 2 |
| Lead sponsor | Trials |
|---|---|
| CastleVax Inc. | 1 |
| Invivyd, Inc. | 1 |
| Register | COVID-19 mRNA Vaccine trials |
|---|---|
| Clinical trials in USA | 2 |
A trial with sites in more than one country appears in each of those registers.
Everything on this page is copied from public ClinicalTrials.gov registry records — it is not written from memory, and nothing here describes how COVID-19 mRNA Vaccine works or whether it is effective. Each trial links to its own record so you can check it yourself.
This page is built automatically: a daily sync job reads the registry records behind our country trial registers, collects every trial that lists COVID-19 mRNA Vaccine (or a registered synonym) as a drug or biological intervention, and tabulates the registry fields directly. Placebos and generic comparators are excluded. There is no AI drafting and no per-compound editorial pass, and the page has not been clinically reviewed. The “last verified” date above is the timestamp of that sync, not a review date. Our general editorial approach is described in our editorial standards and corrections policy. The ClinicalTrials.gov data on this page was last retrieved on 24 Sep 2026.