^Clinical trial number NCT04563702 for "Safety and Immunogenicity Trial of an Oral SARS-CoV-2 Vaccine (VXA-CoV2-1) for Prevention of COVID-19 in Healthy Adults" at ClinicalTrials.gov
^Clinical trial number NCT05067933 for "Ph 1b: Safety & Immunogenicity of Ad5 Based Oral Norovirus Vaccine (VXA-NVV-104)" at ClinicalTrials.gov