Drug Profile

VXA-CoV2-1.1-S

Alternative Names: S only COVID-19 vaccine; S-only Wuhan vaccine - Vaxart

Latest Information Update: 13 Feb 2026

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At a glance

Originator Vaxart
Class COVID-19 vaccines; Virus-like particle vaccines
Mechanism of Action Immunostimulants

Orphan Drug Status

Orphan designation is assigned by a regulatory body to encourage companies to develop drugs for rare diseases.

No
New Molecular Entity No
Available For Licensing Yes

Highest Development Phases

Phase II COVID 2019 infections

Most Recent Events

10 Feb 2026 Dynavax Technologies has been acquired by Sanofi
05 Nov 2025 VXA-CoV2-1.1-S licensed to Dynavax Technologies worldwide
15 May 2025 Biomedical Advanced Research and Development Authority approves a phase IIb trial in COVID-2019 infections

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