Immunization via the respiratory route is predicted to increase the effectiveness of SARS-CoV-2 vaccines. Here, Kaiser et al. describe a murine pneumonia virus vectored vaccine expressing spike protein, and show that intranasal immunization of male rhesus macaques provides good mucosal and systemic immunogenicity and efficacy.
- Jaclyn A. Kaiser
- Christine E. Nelson
- Cyril Le Nouën
