On Jul. 29, 2021, Vaxart announced that it had shown for the first time in clinical trials that its oral tablet vaccine platform successfullyﾠboosted immune responses in subjects previously vaccinated with a Vaxart oral vaccine more than a year earlier.

Study participants were initially vaccinated with Vaxart’s oral norovirus vaccine in late 2019 and were vaccinated again between February and April 2021.